Men, is a woman not taking your last name a dealbreaker?

I know there are some outliers, but most men I've encountered in the dating world—in the US anyway—don't want to give up their last names. More often than not, they expect the woman to take theirs. Even if they don't, they'd expect any kids they had to take their name and not their wife's, or to hyphenate rather than choosing one or the other. This has also been the experience of nearly all my friends who are in hetero marriages.

I'm not planning to change my last name if I get married, and I wonder if that may make me less palatable to most men in my US dating pool. So, men out there who want to marry a woman someday: Would it be a dealbreaker if a woman said she didn't want to change her last name to yours? Would you take hers? Why or why not? And what about when kids enter the picture?