Fair enough Elizabeth, I can't speak for everyone and perhaps there are some who really don't like children no matter how well they behave but that's not been my experience.
I think most people I've spoken to simply take issue with certain types of behaviour that goes unchallenged by some parents. Times have changed and maybe we need to think of better ways to accommodate both families and adults without children so they can co-exist more harmoniously. In smaller pubs that is going to be more difficult.

I would go clubbing or join a private drinkers club to solve the problem but I'm far too old for the first and too poor for the second!