Personally, I was never originally here for the game. I bought the game on Steam for the key to register up a forum account.
Blockland is a pure sandbox. That means that if you're not a visual creative (like me, awful at making custom builds, including in just normal LEGO and Minecraft), then all the fun comes from the servers which have associated game-modes, and I just don't like what servers are on offer. There's nothing that screams, "This is something you really want to play." That means the only time I'll find the motivation to play is if my friends invite me to something they're enjoying, but nowadays I'm stack up with so much work, it's hard to find the time. Add in the fact I've got other games I want to commit to like Destiny 2, and yeah.
I'm actually working on a mod project for Blockland which has the design goal of trying to find something that would entertain even me. Won't be out for a long while and I'll need to find people to do the build side of it, but I think it's going to be pretty awesome once complete.