Does anyone but me think that general politeness and manners should be taught in school?

I’m 29. I think my generation and all younger generations are ridiculously rude. I’m certainly not calling for the strictness of the 50’s, but please and thank you and not interrupting when people are talking and such may have some merit in our hurried modern world. Especially with so many immigrants coming to the US and with the fact that many kids today are practically raised by sponge bob.