Since Irishman mentioned gym:
I'm a member of two gyms. At the Y, I hate it when old people (my age) plop down on a machine, close their eyes and pant for five minutes, then put 10 lbs on the machine and pant for five minutes, then do five reps and pant for ten minutes. At the other gym, I hate it when young people plop down on a machine and then fiddle endlessly with their smart phones. Also hate it when people sit on the stationary bikes to sit on while they watch TV.

And, to Michael's first peeve: I also hate it when you're on the checkout line and the person before you waits until the bill prints out before reaching for the credit card. Even worse: they pay cash, and fish forever in pocketbooks or pockets for exact change, doling out the pennies (and dropping them).
