This is a very general question.
Men marry for any number of reasons.
It really depends on the man and what point in live he feels he in.
There are a lot of reasons effecting his reason for not marrying. If your interested in marring this person...
He should make you better than you are by your self and you shold do the some for him. As I said this is way too general to give sound advice or and quality answer. Take care Vee