Who, my husband?
I wouldn't want my husband to be a SAHP, although he has said he would've been happy to SAH with them.
The reasons why I wouldn't have wanted him to do it are:
He's quieter and less outgoing than I am
He wouldn't have taken the kids to all the playgroups etc I did because he's not as sociable
I wanted the kids to be out and about a lot at various activities
I felt I would be able to advocate better for my kids in situations where another kid snatched stuff off them or hit them, just by my nature
I see it as the man's role to earn the money and the woman's role to SAH.
They're the reasons.