Too much gear, body-wise. I find if I have too many cameras lying around, it can be a daunting task to figure out what I want to shoot with. So, I'm culling duplicates, in favor of having one example of a certain camera. Plus, I probably won't accumulate every single model of the Nikon Nikkormat series or the FM/FE series, etc.
Once I get rid of the F3HP, I'll have an F, an F2AS, and an F3P as my film arsenal. Might add an F4s, depending on how the auction I'm bidding on goes today.