I think part of it for some of us is a kind of awe. At least in my case. There was some money we could spend and I begged for "my half" to go to photography gear. I have more than six months of my regular income invested in camera equipment right now with hopes of starting to sell some of the images here and there to afford to buy more camera equipment going forward. Earlier in the thread I was kind of pounded on because I haven't taken enough of the "right" pictures with my camera since I got it (I'm chronically ill and have been in a really bad patch) and assured I could have used much less equipment.
I didn't really know how to respond, because, well, yes, if I were taking pictures with no intention of doing anything with them but just looking at them on a computer and sharing them on Flickr, I am wayyyy over-equipped (even most of the artists who have painted some of my earlier pictures don't need them to be incredibly large). However, to be able to sell them to microstock agencies I needed a lot more resolution and sharper lenses, so I got them.
Now I'm just struggling with frustration about being so sick that I'm not getting shoots scheduled to create images to sell and wondering if I should give up, sell everything and get it over with.
If you enjoy the hobby... I wouldn't worry about it. I feel that way sometimes with mine since I don't do any paid work and I just take pictures for fun.