Always commenting "I wish I had X" is a real quick way to make sure I neeeeever ever trade with you.

Because that is a form of guilt tripping.
And it's annoying as hell when you see 'OH WOW COMMENT' and it's someone whining.

Stop it.
It's unbecoming and waaaaaaaay stupid.
Like wow.

It's not flattering, it's rude.
Don't do it, I will hide your comments tra-la-la~