Stay At Home Dads

In a day in age where women hold important jobs in society and men are supposed to show their sensitive side why is it still taboo for a man to simply stay at home? Why is it that when you do hear of Fathers staying at home with their children that they are also expected to work at home or work opposite shifts than the mother? It's okay for moms to stay at home with no other source of income. It surprises me that still there are boundaries which a man is not allowed to cross.
I miss Beth like crazy and I miss not having her here to help with the kids. I do have my Father-In Law here at home. Rather than enjoy his time relishing his opportunity to play with the kids he feels he must rush back into the work force before his wife finds a job. It is the man's job to work and bring home the bacon where the female is expected to tend to the children.
How long have we been working on equal rights? It seems that women are out in the workforce and then come home to take care of the kids. I think that many men would love to stay home with their children if given the opportunity. Why are so many women afraid to hand over power at home to our spouses? If more of us women would allow our husbands to father at home there would be more Mr. Moms.