Quote Originally Posted by Catlady711 View Post
Every time there's a lax of previous manners/courtesy, no matter how ridiculous such a little thing may be, it's just opens the door for more of the same on down the line.

Yes you're telling him to 'move with the times' but at the same time the next generation is telling you the same thing about opening doors, please and thank you, swearing, etc. It never ends, and never will so long as rebellion is considered normal and acceptable in our society.
At one time, a lady showing her ankles in public was not only considered rude, it was illegal. At one time, people of different races would not have dreamed of speaking to each other on the street. At one time, people bathed only once a week, or once a month, or once a year. Obviously, someone started a rebellion against these things. Thank goodness, IMO.

What is actually normal and acceptable in our society, any society, is change. Manners, customs, norms, laws all change over time. A society that refuses to change ... vanishes.