We should be able to sell items we have used

[Vidu]

You fail to see that its also a mechanic to keep items "rare" - specially new glamour items, but also "endgame"-gear and leveling gear too.
I'm a crafter, earning my money with crafting 320 gear atm - I would see a lot less if people could just re-sell their gear once they've replaced it with better items.
Same goes for rare glamour-items - I crafted myself the new Thavnair-dress recently, worth about 15 million on my server atm. While I dont agree with how rare and expensive it is right now (please do something about the droprate of those mats...!) it would hurt the market if I could have just passed it on to my friends to use it for glamour aswell.

You can turn your equip into materia, turn it in for GC-seals (given its not a white item or if its on demand for your daily crafting turn-ins) or sell it to a vendor.
Yes, you'll make less money than you would if you could sell it on the marketboard right now - but how stable to you think those prices would be? Let me tell you: Not at all.
At the launch of both expansions the market for the new leveling gear was a disaster for anyone who wanted to earn money from it - everyone was getting HQ crafted gear as quest-rewards and not everyone needed all of it. Items were sold off for as little as 2k, making it worthless to craft.

This mechanic isnt stagnating the market, its keeping the market because its keeping a demand.
You are not a crafter, as far as I can tell, so you probably dont see (or dont care) how that would hurt the market for those of us who enjoy crafting and making money off of it. The binding mechanic is needed to keep items rare, demand in place the market somewhat stable.

You can always craft your own gear if you dont want to spend money on the market board. The game throws money at you by now aswell, that should last you to get everything you need. NPC vendors are probably cheaper than the market and you get gil from quests and daily missions. Depending on your luck, you can get materia that sells well - or use GC-seals to buy things that sell well. You can buy gear with tome-stones - the ilvl 130 you can get in MD (if you upgrade it) can last you til level 55/56. Gear-drops from dungeons are a thing aswell - all HW and SB will gurantee you a drop at the end of each dungeon for your class.
This binding mechanic isnt hurting new people as much as you make it seem, because no one is depending on buying expensive crafted gear on the market board.
The market board however depends on this mechanic to ensure that there is, indeed, demand - and not just 10 items being re-sold all the time.

So, as a mean, overpricing crafter I say: No, we need this in place.

I think it's supposed to be a gil sink. Not an antitheft mechanic. If you could trade around the same armor forever then people would never have to invest gil in more armor or mats. Removing equipment from the pool removes currency.

This is only partly true - its not a true gil-sink because expect for taxes its not removing gil from the game but rather moving it from one pocket into another one. Taxes are a way to remove gil though, that much is true.
And as I explained your way of thinking isnt wrong: It would kill and crush the market because people would never have to spend money again.

[Krotoan]

This is only partly true - its not a true gil-sink because expect for taxes its not removing gil from the game but rather moving it from one pocket into another one. Taxes are a way to remove gil though, that much is true.
And as I explained your way of thinking isnt wrong: It would kill and crush the market because people would never have to spend money again.

I'd say it works pretty well as a gil sink for NPC bought gear/mats. If I could make a bronze knife ( just an example) with vendor mats.. then that knife never left the market circulation, nobody would ever spend money on vendor mats for the knife ever again. Also gathering gear for leveling, was pretty cheap to get from the kugane vendor.. but when I was done it got converted/desynthed instead of sold to someone else. The money I had invested buying it in the first place was removed (heavily reduced at least if I had chosen to sell the materia/mats that resulted).