It's a game, it will end at some point. You're not going to be turning 66 in the game and watching your virtual grandkids grow up. The end goal for this seems to be college graduation, but it hasn't taken a single step toward that. The first semester exists, but that's all there is. After nearly two years.
The mechanics aren't consequential enough for actual emergent gameplay. The weather system is designed so that, regardless of weather, you can wear whatever you want even if it makes no sense. You can wear a coat in the middle of summer with no real consequences, same with going naked in the middle of winter. The relationship and friendship system doesn't actually require any gameplay, nothing we do there affects anything short of getting caught cheating on a partner. Just go on a hangout every now and again, all of which are totally on rails, and it's fine. It's like this in pretty much every situation. Even the character storylines end right as things start to get interesting.
It just needs more depth. Right now it's just a shallow puddle that's getting wider without getting any deeper.