Londonrz - you're missing the point that people are trying to make. The presence of kids is not the issue, it's the presence of kids treating pubs like and restaurants like a playground and their parents allowing them to do so.
I think we all accept and understand that kids may get bored at the table and want to wander around but that doesn't mean the parents get to ignore them when they do so.
OK, fair enough and good point. My "little angel" is usually well behave but at 3 can sometimes become a little unhinged and run around like a mad thing until corraled and placeted with juice or crisps, it is at this stage where, although she has been quite for an hour, we get "that look" from some other patrons.
How horribly selfish of them. They'd also be ridiculous to complain if their chair fell apart after an hour ("you've had 59 minutes on that chair, what more do you want?"), if part of their lunch was infected with salmonella ("god almighty, it was only the cheese! The rest was fine!")
If you can't control your child for the whole time you are in a pub, don't go.