What astonishing is how narrow minded some people are.
"Abroad" is yes, a brit AI resort in Spain
it's also cities, countryside, every other possible culture and religion, every climate, every belief, museums, sports, forests, ocean. It's pretty much limitless what you can achieve, explore, meet, and the jobs you could possibly try.
I wouldn't want my kids not to realise and see for themselves how different people can be, how small the UK really is and that there is more to do and see.
If they don't like it, and want to settle in a british town somewhere, why not.But at least it's should be a choice and unless they've experienced other culture, how could they possibly know they prefer being here.
Even if you only go for a couple of weeks a year, some parts of the world are so beautiful, why missing out?
If you think of all the health reasons that might stop you from travelling, what a shame not to do as much as you can whilst you can. It might not last.