As someone who has logged most of their lifetime away in MMORPGs and other kidns of online PC games (hey, give me an excuse to socialize with my generation, and maybe I will- haven't found one yet), I have to say WoW is both my favorite MMORPG and when I DO hate it, its still a handy time burner. I recommend it if you like this sort of thing.
Oh, and I play MMORPGs and don't have friends to normally interact with in game either. I'm just not the type to socalize as much as others, so when i do play an MMORPG, its largely a solo venture.
The better-than-console if done alone money spendage aside if you make it your standby has already been covered, but its worth noting that WoW is an MMORPG that is consistently freer to muck around in than others. What I mean is that provided your friends are NOT around, you can do what you do left to your own devices and still progress well enough.
I'm not talking about pickup groups, I'm referring to leveling/money making/crafts.
WoW's groups (Pick up or otherwise)have been some of my worst and my best in my MMO hopping days (doesn't matter what game it is in this bracket, there is always an idiot somewhere), but at least you don't need them all the time to do something. even my best counters as MMO's I played and liked (City of heroes/villains and FFXI) put you into Scenario's where, depending on the class, you were just plain better off tagging along with someone at all times. WoW doesn't have that in the same way, and thank goodness for it.
as a matter of fact, aside from the grouping aspect, you can sit the game down at just about any time and come on back later (Y'know, aside from fighting deep into the heart of a mob spawn territory, of course). and folks- the most recent expansion (Save the newest patch content) has apparently been designed so that you can basically get everything in chunks, so you CAN come back later if something pressing comes up, and yes, that includes the raid content. It helps if you do have a busy life outside the game to socialize with those who also do, and they will understand why you have to step out when you do.
I didn't have that, but a lot of the guilds I worked in during my continued time were loaded with people with jobs and children to keep an eye on. we still raided in recent content, and did fine enough. my guild master turned up to heal most of the raids, and he has a day job and a daughter.
About the only thing I really dislike consistently about the game is the crafting system. Ive seen much better ones, but hey, everything has to have a minus somewhere...
And at least i don't have to look at the Valkurn dunes again.