Playdates, cocktail parties and other outings

Why is it always the moms??? It drives me nuts that I'm always the one listed in the birthday invitations and having to deal with kid-related commitments. I used to think it was pretty benign but slowly I've started to get annoyed and think this is one of the root problems that causes women to burn out -- there are too many default assumptions made about what roles we play at home and every. single. email is a time suck of some kind. What triggered this is my logging on to a class cocktail potluck and seeing that every person's name next to a food item was a woman. Maybe none of them work but I do and I wish my husband got those emails!