I've spun yarn for socks before. I've tried superwash with nylon, or with silk. I tried spinning up cheviot fibre. I usually spin a 3-ply, sometimes a chain ply, but I always end up with socks that wear out too fast. So I've stepped up my game by spinning this:
A 4-ply spun from Karakul fibre. This is not soft, oh no. But I've got high hopes that this yarn will make socks that last.