I know a couple of men who love their step kids like their own, but I agree it's rare. More prevalent than women who love their step kids, however.

My kids are too old to be bothered with that step-parent nonsense now, but if I had divorced when they were young, I wouldn't have EXPECTED anyone to love them as their own. I just wouldn't have married anyone who didn't. And I wouldn't have been dragging multiple men around them, either.