The French do take time to enjoy life, but then they do have higher expectations in the first place and are seen as a nation of lovers, having sex 137 times a year to our 119. On the other hand they are not so giving when it comes to customer service. Paris syndrome is a very real phenomenon involving traumatising Japanese tourists with service related rudeness to the point of them needing therapy. Not to mention of course the French laissez faire approach to driving.
All this may be true, but perhaps the main irritation between us is that the French have a tendency to smugness, insisting on believing their food, wine, fashion and perfume cannot be bettered and the Brits do genuinely believe they are better, if not Great. God forbid that any Brit should stand up and preach as much, we only love an underdog.