I played this for like 3 months straight every day last summer and in September I just sort of stopped for some reason. The game is fun for a while but I think there's just too little things to do and progress towards after you finish the 'campaign'.

I think you have to have a lot of patience and creativity to make steady progress through the post-game where your efforts are focused on terraforming, decorating, and redesigning your island and I didn't really have the motivation to stick it through. Maybe I'll jump back in sometime in the future.