Skrim is thataway. This is an MMO. You might want to look up what that means.
Actually it is an MMORPG where the RP means Role-playing, so if you want to insist that the "MMO" portion has to equate with "group or play something else" you open yourself up to the "RP" portion equating with "if you aren't going to role-play go play something else".
The MMO portion of MMORPG just means that it has a lot of people playing in the same game world at the same time - it says no more about "you must be forced to group" than the RP portion says "you must be forced to role-play".