People treat Anima regeneration like they treat Inventory slots =)

Anima should stay. It's a great transport alternative for when you are in Camp Crimson Bark and want to go in Limsa Lominsa. If you don't have Anime, just go back to Gridania, take the airsheep, pay the MAX 5'000Gil and fly there, spending almost half an hour to go there. If you don't have money, then walk! (hush, I did that when I died without saving in Treespeak, I returned to Skull Valley and had to run all the way there with the boat, it's not the greatest way to travel!)

Instant teleport, City transport and Sea transport. We should have enough, to be honest, and it's the perfect dose, so manage your Anime and go adventuring!