Inconsiderate and oblivious

What, exactly, is wrong with people? We were at a local restaurant a few weeks ago and what I observed is still bugging me. So here I am with more ranting and raving. Normally our beef is with the service or the food - why is it SO hard to find good service in the food SERVICE industry? This particular night, however, we had a fabulous waiter who was attentive without being at our table too often. No, the beef this night was with two workers - I think you call them hostesses? - who stood right behind our table performing the menial task of wrapping napkins around utensils. I get that it is a mindless type of duty but if you are standing adjacent to customers trying to eat would you really be as mindless as these two who stood there talking loudly and bothering multiple tables around them who could hear every word? A normal person would probably notice the annoyed stares from the patrons but these two were totally oblivious and carried on for 10 minutes. I wonder though, is it me who is just abnormal and this is what "normal" has become? More often than not the majority of people around me are inconsiderate and oblivious to their impact on others far outnumbering those who are considerate and observant. Is this a type of social evolution similar to where we think nothing of walking around with a telephone attached to our ear and carry on conversations inconsiderately imposing our chatter to others around us where without the technology it wouldn't be expected? I know I pay attention more lately to how my behaviour is impacting those around me - although is doesn't seem to be the normal thing to do. What a shame...