Okay, this one should be a bit of a given, but you'd be surprised how singleplayer focused most MMORPGs are these days. Black Desert Online doesn't actively punish those playing alone, but doing so means missing out on a huge aspect of the game. Nodewar and sieges will allow players and their guilds can vie for control of nodes and territory. Without traditional raids or endgame dungeons, sieges are going to be how most of the community is spending its time after reaching the level cap. Missing out on that because you haven't joined a guild would be a big loss.Guilds themselves are also more complex than they first appear. Instead of simply joining up, you sign a contract that pays you a daily salary from the guild coffers. You can also participate in special guild quests in order to increase your daily salary in addition to special guild skills that will provide you with passive buffs like increasing your gathering speed. Playing with friends also gives a huge boost to the experience you get from killing monsters, so you never want to go slaying alone. Plus, it's nice to have people to talk to, y'know?