I understand. I was friends with a couple of guys that I met at work back in college who were heavy EQ players, and that's a whole different animal from UO. One of them sold his characters a few times to people over the years and got like thousands of dollars, andwas selling Platinum all the time.
I guess I always enjoyed UO because the gameplay loop wasn't about having to spawn camp raid dungeons or whatever, it was just freeform and it was hey let's go PVP in Territhan Keep or one of the dungeons tonight. And if you weren't home, just set up EZmacro and level skills in the comfort of your online house, until they cracked down on that. Once you got your character maxed out skill wise, it was easy to pick up and put down whenever, which is why we played other games.
Probably why we played D2 so much was because we all played Diablo back in high school. I remember pirating a copy of Windows 95 from my friends dad because you needed it to run the game on my potato PC. We were just excited as hell with the second one was coming out and you could actually have a bigger multiplayer party.
Like I said though, since you've not played it you're in for a treat especially with the remastered version. You'll really have a good time, it's still one of the all-time greats.