I think any man who was truly in love with his wife and really,
really wanted a baby (but his wife was infertile) would offer without a seconds hesitation to carry the baby for them and avoid adoption if he could...
What a fantastic and wonderful gift for him to be able to offer his wife... I think he would see it as making a sacrifice of his masculinity for the sake of being able to have a child of their own, rather than a luxury of having it both ways!
(as has been said by everyone above, this is just my opinion...

)