Everytime I read rmt shouts and tells, I ask myself after blacklisting them.

So who buys gil, and what are they using it for?
SE even stated that they will look closely where gil came from for housing, so I rule that out.
Buying Crafting materials? I spent 300k on Carpenter 20-50 and earned 350k just by handing in the leves and selling the rest on Marketplace.
Repairs? Normally competition of Dungeons gives enough gil for that.

Buying gear on Marketplace? Apart from "rare" drops that can be sold like coliseum gear and such. As soon as you want to go endgame nothing crafted (at the moment) is worth it to take over Darklight and even less than Mytho or Allagan stuff

So, what is the deal? Am I missing something where I can invest my gil? Or are the RMT just for people that feel the need to have maximum possible gil, just in case they need to buy every HQ vanya they can find for god knows what?

ATM Gil feel to me about as useless as Orobon livers.