I love making socks too. They are so fast to do. If I start to get a bit bored I just start another pair in a different color and alternating between the two pairs keeps it interesting for me. I planning on making a pair of knee socks for myself one day. Just hope I can do it so they stay up ok. I love the washable wool yarn.
I don't know what to do about your heel problem though. Would making your DH tube socks help keep the heel from wearing out too fast because tube sock heels rotate?