Taking Facebook as an example for a global community: Just because I have the opportunity to participate in each and every Facebook group I don't have to do so.
Yes, in real life there are compromises to take. You have to accept that in order to thrive in the world you have to comply to some of its rules. I'm very much a cultural imperialist in that I think that an open-minded, tolerant mindset is superior to isolationist, absolutist ideas.