I'm totally paranoid about missing a shot. I like to have the long lens on the K-3, the 18-135 on the K-5, on the car seat.. The 40XS or 21 ltd. on the K-01 in the camera bag, a phone in my pocket, and sometimes the Optio 90W in the other pocket.
I keep thinking I'd like to sell some stuff, but I rarely do, if I have all these bodies in the house, they may as well be used. No sense having them and just leaving them in the cupboard.
Every time I miss a great candid because I wasn't ready, it gets worse.
The worst is when I get in the supermarket and can't remember if I locked the car, I almost always have but you still have the thought "what if I didn't.". There's probably two or 3 K worth of camera gear sitting on the seat. Not in plain view of course, but still....