The thing is, with adult boys, they see married men as somehow immasculated, only half alive, and obviously as a result quite miserable... and this likely scares him.
These boys need to see the positive merits of marriage or they will never believe there ARE any and wont' invest in the long term with anyone.
I could be way off here, but that's the sense I am getting from your posts.
Your Husband feels like he's being forced to immasculate himself... which is not a pleastant feeling.
Again I could be way off... I am doing a psychoanalysis of someone I have never spoken with based on some posts in a website forum... not the best material to go on.. lol