Yep.
I must say I introduced about 5 people to the game, with different results.
My sister loved it. She enjoys the whole war thing, but mostly she enjoyed making RP and having fun while being a simple knight. She quit because
it consumed too much of her time. Also, she had loads of fun on RedSpan, even during her fall. The battles didn't matter as much as the sense of camaraderie. Nonetheless, when she went to ASI she still played for a while, even visited me in Falasan for a few battles, but eventually she couldn't join the RPs for lack of time, and I assume the atmosphere inside ASI wasn't as close as in RedSpan.
edit: I talked to my sister, and she said the main reason she lost interest was for
losing her redspanian friends when her region was sold and the realm was finished. The guild they had didn't last long, and most people left the island anyway. I suppose this problem can't really be countered by code, but by friendly receptions in other realms, to feel like home, and perhaps having more than one character (as a backup home).
A friend of mine who really likes war games and to play in teams was discouraged by the politics, and he didn't get to see much action when he joined, quit a few days after, found the game
a bit confusing and unclear. I think it was just
not his style.
A friend of my mother who joined mostly for the RP felt the atmosphere to be a little dark-ish, and
not very responsive, also quit after a few days. I did advise her to go to Arcaea, but I don't recall whether she went or not. (she's also hard core player and forum admin in another game, so I'm not sure how much that influenced in her not wanting to work too hard to find her niche here)
My boyfriend (hah, he plays WoW, behold!) joined after watching me play for quite a while, and he's really into both strategy, team-play, war, politics and roleplay. He liked the players, he enjoyed the battling and politics and team-play. He
left because of the ganging ups. (both due to deception with player attitudes and with the game for not having mechanisms to deal with it properly) I know some people really don't see the ganging ups as issues, but for those who want a fair fight and see in many continents the same sort of situation (it was some years ago, and he experimented that in 2 realms) with realms fighting lost battles and not advancing diplomatically, well, it's really hard to keep playing. He also left a realm who wanted to join one of the ganging ups, then left the game altogether.
The last is my mother (cheers!) who likes RP, politics, team-play, and nowadays I think she also likes the war thing.
She's still playing, much more than I am, in fact. And loving it (despite the bugs and problems). You can ask her on IRC for more details, though. :p
As for myself, I was close to leaving BM several times. I hate the ganging ups, but I think we're working on codes to improve this a bit, so I wouldn't leave because of that. The reasons, over the years, were:
1. time consumption: the 5 minutes a day is really wishful thinking - just what you do when you really aren't playing but have to maintain a char and help the realm a little
2. the last days of my first realm: which involved both a very stressful period, followed by a very boring truce period, followed by uneven hopeless battles (though unavoidable and necessary for the wrap up), followed by lots of friends quitting or pausing the game, which finished lots of RP partnerships and story lines... - don't get me wrong, the whole war was extremely fun, even to the losing side, but the last days took their toll, waiting for each region to be taken over, discussing what now, seeing friends leave.
3. time consumption again, later on, but this time due to RP
4. my current chars are all but one paused because I don't have the time to play them in a meaningful way, and I don't see much fun in reading orders every 2-3 turns, seeing I can't follow them because they don't refer to me, doing some maintenance work and going away... Basically, I can't play bm lightweight
So... here you have some BM experiences, though they are a bit hearsay.
I'm a bit skeptical when talking about time consumption, because I think we can find time for stuff we're really enjoying. But I couldn't pinpoint what was it that made me not want to spend my free time here. I'll work on this later (hah).
edit2: Now that I think about it, maybe the whole "losing a dear realm" situation needs post-traumatic counseling, since so many people leave or pause, specially those who used to be in positions of power. :p It'd probably be healthier if more realms resigned instead of fighting to death.