I have different morals for different CoDs. I personally always tryhard unless we're in a full party, however, I would never mess around every round if we're losing. As soon as we tie it up or get down a round, then I switch to a class to try and win. It's all about the win for me..that's how I have fun.
In MW2 I don't use the ump or rangers. I never tube outside spawn tubes on rundown. I do use the AA12/g18s/famas though.
In BO1 I don't use the motions sensor or ghost.
In MW3 I don't use sitrep, akimbo fmgs, type or portable radar. I only have 1 mp7 recon class, but that's only for dome since I hate that map.
In BO2 I didn't use the remington, pistols, DSR, or the FAL until around May when I snapped and stopped caring. I still don't use the FAL/DSR/kap, but occasionally use the remington or tac. I also don't use MMS, target finder, shock charges or riot shield and never will. I also don't use dead silence awareness.