He sounds very confused about what he wants. On the one hand I agree that if it's something you want and isn't going to cause him harm, then why not do it for you. But, on the other hand, I'd caution against pushing for that. I know several men (and was married to one before) who got married when they weren't ready / sure that's what they wanted and it often spells disaster. For some reason it's like that step in commitment makes them suddenly freak out that they're going to miss out on the weekends of hot tub parties with supermodels (that were never going to happen) and it can put years of strain on a relationship.
I also don't believe having children is showing "way more of a commitment than marriage". Sorry, I know lots of people who have chosen never to have children but are completely committed to their spouse and I know so many men (and some women) who have several children with several different people (all of whom were together, not one night stands) and they've been pretty happy to break that commitment too. They might be committed to the child, but not necessarily the other parent. I know women who have 'chosen to have a child' with a man they admit they wouldn't marry, but have settled for because they are getting older and wanted a child.
A wedding is not commitment as such, nor is a baby. The ongoing way you act in a marriage or a non-married partnership is. Commitment is shown by the way you treat your partner, whether you both make sacrifices to make each other happy, by the way you respect them and become involved in each other's lives.