Originally Posted by
thucanhho
Not at all. I like my kids, but not other people's kids.
This pretty much nails it, although perhaps unintentionally.
Most people love their own little angels (even though many are actually little monsters), and don't care much for everybody else's kids.
When you're travelling with your own kids, you are scandalised by not being catered for. When you're travelling without and just want a quiet drink and snack, you get annoyed at strangers bringing their kids and then not ensuring that they behave appropriate to the venue.
As mentioned by others with examples, a truly well-managed hotel will cater for children elsewhere.