For the extreme most part (like 99.9%), the flight attendants at my airline are extremely professional and care about passenger safety (their main job, NOT handing out drinks!) and comfort. There are a few that seem to always be in a bad mood that passes on to the passengers.
When I sign in for a flight I can see the names of the flight attendants along with their seniority. I prefer to fly with senior flight attendants as more times than not the passengers will arrive happy no matter the conditions of the flight (bumpy, delays, bad weather etc). True the age gap between myself and the senior flight attendants is sometimes annoying. On long overnights the crew will sometimes go out to dinner/shopping/movie together. When the age gap is large, I don't tend to want to do what they want to do.
Anyways, saw this on Youtube this morning. Pretty funny.