In my experience, on the Horde side I get the impression that the “kids” seem to gravitate to blood elves and orcs, and “adults” tend to play tauren and trolls. I base this purely on the way, in PvP situations (mainly holiday stuff), blood elves and orcs will attack on sight (cuz they just gotta be badass), while tauren and trolls tend to leave me alone, and even give a friendly wave. Seriously, my human can stroll into Thunder Bluff (the tauren capital city) and honor the elder/steal the flame/grab a bite at the “Thanksgiving” table, and the tauren players standing around don’t do a thing. If anybody does attack her, it’s almost always a blood elf or orc player who happens to be nearby.
I’m almost exclusively a solo player. My main character, a human paladin, has almost 75 “days played” (that is, almost 1,800 hours), and the vast majority of that play time was solo. I only started grouping up for dungeons 2-3 months ago, and then only because she’d simply run out of other things to do. She’d explored the entire world, all of her tradeskills were maxed out, she’d completed almost every available quest in the game. The nice thing about using the Random Dungeon Finder, though, is that once the dungeon is completed, you simply leave the group. You don’t have to continue hanging around with those people (To quote a comedian I heard years ago, responding to people asking him if he was ever going to start a family: “If you do get married and start a family, you pretty much gotta talk to these people, like, every day. That wouldn’t work for me. ‘Honey, we need to talk.’ 'What, now? Can’t this wait ‘til the cable goes out or something?’”)
Questing for days and days and days in The Barrens, and then walking into Ashenvale for the first time was the big one for me.
Yes! They’re “interdimensional goats” not “space goats”!