The trick with Planet Entropia is to treat it as a subscription game. Playing for free and sweating is doable, but you think the grind in Black Desert is bad? Never sweated in Entropia
The real "trick" is limiting the game to 10-15 dollars (USD) a month like a subscription fee to a normal MMO. The other trick, don't expect anything out of it...just play the game like a pay to play MMO.
When I played it a long time ago, the game was actually really social (at least on Planet Calypso, the most populated planet). That was by far best part of the game. I remember joining this player made event (I forgot what it was, like a party or something) in one of the cities and the community was surprisingly amazing. Even as a usual solo player, I was welcomed to the community and everyone treated me incredibly nice. Usually I get ignored when I chat in games, but everyone took the time to talk with me and talk with everyone else as well.
Also surprisingly...as someone who solos 99% of the time in MMOs...Entropia was the only MMO I ever WANTED to group with people and I DID group with them. The people were so friendly, I actually wanted to make friends in the game and be part of the experience of the community. The single only MMO that has ever made me not a solo player.
It was one of the nicest communities I've ever seen in an MMO. I was really surprised actually.