When you're feeling like crap, the day sucks, you're stressed and you need to blow off steam. You put on your favourite song, sit down to play a game and you put on......?
For me it's usually Civ 3 or 4 or Pokemon or System Shock. Love those games.
Ultima was one I tried so hard to keep in, but pivoted to other series.
Oddly enough, I've never actually played the Ultima series. I just play Ultima Online. I always mean to go and play the linear games eventually, but I haven't.