Welcome. My list of favorites is too long to post. I have installed a few hundred games (I know, rookie numbers) but if I die please wipe my hard drive.
Pretty rarely. If I was to revisit a game, it's because I've deleted it and started with a fresh save. For me the story is important to ramp up the tension and feeling in a scene. It's just too different when you look at the gallery vs being hyped up by the story.
I play on PC only. Most compatibility and I turned off all the major spyware that Windows has. To be fair I think at this point Microsoft doesn't give a shit. Hell they probably want to use that data to advertise to you.
If you earned your money, you deserve it. Personally I want to get to the point where I have enough money to retire early so I can be stuck on these forums forever.