I used to play all the time, unfortunately as you get older you've got more responsibilities and less time, which sucks. I'm nearly up to 780 games on my steam wishlist, admittedly about 250 of them are unreleased, but still. I try the occasional game nowadays but I've got shit to do.
Depends on what i am doing in my life, sometimes there was periods when i played/searched for games for every day for a couple of weeks, but i was smoking weed and was depressed i think.
I don't have much time to play but I have played these for a long time. Maybe twice a week for about 30 minutes . Sometimes longer... Played at least hundreds of games if not thousands.. many times wiped all the games out and then downloaded again.. it's like smoking, I know it's bad but I love it.
A horrendous amount. Any game that has my favorite tags and doesn't look absolutely awful I'll try. I probably have more than a 100 games where I'm waiting for the next update and the equal amount that have been abandoned.
I can safely say that I have played north of 300 games up through their latest update. I currently have 15 on my PC at home that I am in the middle of a play through on.