I had two Canon DSLR bodies (6D and SL1) until a couple of days ago when I lost my SL1 during a vacation.
I liked having an APS-C body primarily for the access to the (at times) much cheaper but still solid IQ lenses. For example, I don't shoot a lot nor need absolutely terrific IQ from a telephoto lens, but it's still nice to have. Hence my cheap 55-250 IS. The 24mm pancake is a nice small lens on a small body. And lately I've been contemplating getting something in the ultrawide department, and noticed the inexpensive EF-S 10-18 has good reviews and a relatively cheap price.
My favorite and most used focal lengths are covered with my 6D and 24-70ii.
So because of this, I'm thinking of picking up another SL1, or maybe even getting a 60D while they are fire selling them right now. But then again, bodies depreciate much faster than lenses. Like the title suggests, is this just being penny wise and pound foolish?

As stated above, unless budget is forcing you into a choice between keeping a second body and buying better glass, I endorse having an APS-C body in the kit.
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