I have been there a few times . . . I am going to select art and cuisine as front runners, although there are many facets to the French culture . . . . .
The truth is that no one has ever been rude to me when visiting their country. I only speak a couple of hundred words in French, mostly basic survival words and phrases, but once you meet them on their terms, they are a quite wonderful people. Too often, travellers from other countries attempt to treat France like an amusement park and expect to be catered to rather that trying to experience its lifestyle, traditions, and customs (this, needless to say, is a bad approach).