I would venture to guess most men dating women your age (I am only guessing your age range) would anticipate they might have kids. I think they should state up front if kids are okay or not okay. And good thing that you tried to scare him away with it before wasting a day on a no-kid guy!

OT- My 30 year old divorced brother met a girl he liked a party recently. When he was telling my dad she has a son my dad was like "A KID?" I pointed out that my brother will probably meet many women his age with kids. I told Dad, he either will be open to it or narrow his field of wonderful women!