Get started with building thinking it's a bit like Minecraft only to come to the conclusion that all time spend there is of no use. Buildings can collapse, you need actual walls, a moat, a harbor, it's quite something. But once you have that base standing you feel a sense of pride. And then ranged enemies come along to wreck your base to pieces from a distance so you know you have to upgrade it further.

Also bats, screw the bats, they are the bane of my existence. It's not like they deal damage in any sort of way to me, but my poor pets, they live a sheltered live for a reason.