I hate the whole publicly traded model of sock exchanges. I hate capitalism. But have to engage in trading socks (I mostly do crew cuts and a small quantity of direct socks) so that my fabric doesn't lose elasticity by sitting in a drawer or hamper.

Same thing with t-shirts, don't like exchanging shirts and getting marked on a centralised list for that but it's a safer option than using your own.

Fortunately I don't do laundry so that's a plus.