Guild Wars 2

So my inventory and bank are cluttered with old exotic gear that I won’t ever use again, and can’t do anything with (’cept deleting ofc -.-), and that got me thinking – What is the point of not being able to salvage and/or use karma (and other) items in the Mystic Forge?
This seems like (Yet another…) completely senseless restriction. If it is because these items are very cheap, and thus might ruin the in-game economy, if used to make items that you can sell on the TP – Just make them more expensive..! Or make it so that they can only be salvaged into stuff like ectoplasm…
Why does karma even exist in the game, if the stuff you buy with it, is not as valid as with gold, or simply crafted?
Did the devs regret making the karma-system and thus turned it into something only used for a few skins, and components for lengendaries?

It was a reaction to a problem at the start of the game. That it no longer has the same impact on the game I think it should be reviewed.