I mean, why not?
Even though we're basically going through a drought, me, and I'm sure other people here still find this mod fun, both for survival, and just screwing around with AoA stuff in creative worlds.
Besides, there are other mods and games out there that haven't gotten updates in years and yet still have a fairly active community. Why? Because they like playing the game/mod.
(And I know I said I was going to return in May, but I suppose you could consider this post an exception, and I just got addicted to this mod again)
For me I've tried to move on. I've really tried. But my custom AoA pack is the most fun I've ever had in minecraft. And the only mod I could find that's updated to recent versions that plays even somewhat similarly to AoA is abyssalcraft. That's just not enough to scratch the itch. So I just keep circling back to AoA.