I think, its probably more relevant to ask, what make people leave a poker room? And for me the answer is a lack of activity on the room (not enough games running) and then also problems with withdrawals. If I dont feel confident, that a request for withdrawal will be met within a reasonable amount of time, then I dont want to deposit significant money or spend significant time on that room.
Unfortunately 888 Poker currently meet both those criteria. Not a lot of games running, and requests for a withdrawal are now commonly met with nonsensical requests like sending a copy of your mothers drivers license, which must be in russian and also show her current occupation, even though she is dead. And they do this despite the accounts being already fully verified years ago.
So I think, 888 Poker is a room, everyone should leave. Or at least not deposit any significant money or spend any significant amount of time. Its ok for freerolls and to play a bit of cash games or a few tournaments now and then. But nothing more than that unfortunately. Other sites like PokerStars, GG Poker and ACR Poker are far better and are being managed in a much more professional way.