Doggie bags outside the U.S.-yes or no?

I never (at least rarely) take leftovers with me from a restaurant, whether at home or abroad. First, once I've eaten a meal, I'm through with it. Second, leftovers from a restaurant never reheat well, IMO. Third, if I'm abroad, I have no way to store or reheat leftovers most often. But, if I am dining with my mother, she will take home her leftovers, my leftovers and anything that the people at the next table looks as if they might leave. Oh, brother!!