I want two cameras

Considering I'm a prime shooter I'm tempting myself to pickup a backup body... a 5DsR also to aid less lens swaps in field. 85 mounted to the 5D4 and the 200 mounted to the 5DsR.

Is this asking for too much?

What do you mainly shoot Talley? If you shooting wedding and events then it makes sense to shoot dual bodies. I mainly shooting weddings and only use dual body during getting ready and ceremony. Dual bodies are only fun for 30-60 mins after that it is getting in the way.

When I shoot commercially or for a paid gig, I'd say it's necessary to have that second body that's at least the same format of not the exact same model.

That's when you say, "I need a second body."

For personal work, I can't do any better than, "I want a second body." But lately, I haven't wanted to carry the extra weight...

And if you clean your own sensors, then it's harder to defend the "don't want to swap lenses thing."

If I go on a road trip then I definitely bring an extra body.

The fastest way to get more practical about these things? Get older!

But yes, you absolutely should get a second body!

I've used two bodies (or more) for years since I shoot a lot with primes. Right now I'm using a 5D4 and a 5D3 - you could probably pickup a lightly used 5D3 as a second body as reasonably inexpensive supplement.

just my kids and such... nothing pro.

too many wants on my want list.

Borrow or rent a second body, borrow a dual strap and lug dual bodies out for a trip or two then you will find out if you love it or hate it. When I don't shoot with dual bodies, the ThinkTank belt with pouches is great for me (at wedding).

Nothing wrong with that. In my experience I have yet to find that one "perfect" body that excels in everything, so I've come to the conclusion that multiple bodies with different strengths is the way to go. At the moment I have one body that is better in lower light/high ISO and I like the colors from more, and another with high resolution and slightly better AF albeit at the cost of being slower and needing much more post-work. I also have a small m4/3 camera for travel, touristy, non-important stuff. Long term I'd like to upgrade all 3 to newer models, and possibly add a DX body for sports lol. Photography is a never ending shopping spree it seems

You 100% honestly have THE WORST G.A.S I have ever seen

Wait, some people only use one body? How strange

I want two cameras, also. I'd even settle for one camera. The problem is that I now have three cameras (well 3 DSLRs). As someone mentioned above, different bodies excel at different things. Right now I have a 6D (low-light and killer OneShot AF), an 1DIV (killer fast/accurate AF, not so good low light AF, really good IQ, decent results in low light), and an 80D (AF fast and accurate like 1DIV, AF in low light like 6D, decent results in low light). I think that if I had to keep only one of them, it would be the 80D. I can't bring myself to sell the 6D because I like wide. I could conceivably sell the 1DIV, but it is the last Mohican with regard to sensor size.

Rant complete. Now back to your regularly scheduled programming.

I love my family photography after we switched from film to digital. Doing it since 2007 on digital. Well, on film as well .
Looking at your kit it makes sense for me to suggest second body. But not the same DSLR with prime on it with risk to bump all of it to kid's head every time you are getting close .
Get something something small but with best IQ possible, which still depends on the sensor size. Like Fuji X100 series or Sony RX1 series.
Canon FF DSLR with L prime on it is unbeatable for best IQ family portraits, but small camera with snappy AF helps to stay in touch with kids.

I am a huge fan of having duplicates of the same model on hand when I'm doing anything. Having 'a backup' camera that sits on a shelf or in the bottom of a gear bag and only ever brought out when there is a problem with 'the main camera' is an easy way to run into frustrating little errors. - Was the battery still charged? (Does it even take the same battery/cards as the main camera?) What kind of settings was it on last time it was used? Can it use the same lenses your main one does? Are the buttons/settings anywhere remotely where you expect them to be? (I technically own a T3 along with my 7D bodies, but it gets loaned out to friends because I rarely if ever actually remember how to adjust things with it.)

Having duplicates gives you flexibility and consistency. Hand the spare camera off to someone else to get shots from a different angle, or jump between lenses without having to actually swap. And at the end of the day when you go to process photos, then (barring something very weird with the cameras) you can rely on a similar baseline working with images from either camera.

You have the money? Sure, go right ahead. Otherwise, there are no needs...especially you aren't shooting paid gigs. Especially if you know that you have the chances to change lenses on the field and not missing shots. Most people would have a cheaper BACKUP body just in case their main body dies and in order to continue shooting.

I do motorsports and other events. Besides offering a quick choice of lens, the second camera also serves as a backup in case of failure. The failure may be a simple as a battery dies or a full memory card, but with a second camera you can instantly (or nearly so) change cameras and continue shooting. Weight and bulk are a factor.

regards,
dms

Why so many mpx? Why not a 5d3? or even a crop camera to see the different pov the lenses give you.. As you already have DR covered, why not go for something different like fps?