I also dislike fake politeness. It is often trite, boring and more. I have known several ''older'' people who ''should'' know better who made ..... Ugh. Another poster summed it up I think.

I think that you probably come across as a bit ''passive''' and some personality types might attempt to take advantage of this to make themselves feel better. They have more ''issues'' than you do... Assertiveness would probably help, you do not have to be rude (usually )