The UK also gives people 6ish weeks (5 weeks to take when you want, plus 8 fixed bank holidays). I grew up in the US and am American more than I am anything else. I've lived in the UK for a relatively short time (6 years, under 20% of my life) -- but that's been my entire professional career. It's cultural differences like this that lead me to believe that America will never feel like "home" again -- I now can't imagine living somewhere where 6 weeks of vacation time seems like it's far outside the norm.