Oh, sorry. I'm not from the US, so your first point is really foreign to me.

For the second point, some people gather all their keys together, but for most instances, keeping car keys and other keys separate reduces risk of loosing your most valuable keys, as most people I know, me included, either has a smart lock to their apartments or has a neat place for it around their home. Why risk losing a valuable key for a night of fun, so keep keys away from fun times.