It's just how ffxiv handles gear upgrades. In a few months next patch comes out and all your hard earned gear is obsolete. I really wish for something longer lasting. This time it was worse than ever as 24 man was released so late, that I was already finished gearing.
But for the savage/extreme fights, I learn them, because I have fun tackling the hardest content this game has to offer, for the feeling of achievement and joy when finally clearing it after weeks of work. The gear is just a bonus.