People worry about this too much. I keep my comics in a cool dark closet, smoke free, and my good stuff in mylars and mylites boxed. Best I can do and I'm sure my comics are going to outlive me.
Comic paper longevity is crazy long compared to other hobbies. Try collecting foam latex movie props as I used to do. This stuff starts rotting in a decade no matter what conditions you keep them in.
In comparison, I just don't worry about my comics. I do the best I can for them and everything is in great shape.