Regarding Treasure Chests and Their Drops

[Mijin]

I dont take em 1/2 the time, so not to put junk in my inventory

I cant resist the urge to open them, it's like OCD or something.

Er, effort-free gil, consumables and a chance to get random gear = no purpose at all?

While I agree the reward can be underwhelming... they aren't completely useless.

Well to me the rewards are so negligible it isn't even worth getting off my Chocobo and taking the time to open one, and like Renen said they rewards aren't even worth the loss of gear space. I think it would just be cool to add a fun and rare reward to them. maybe like a pirate outfit or something, they are treasure chests after all.