Southern gentleman values in 2024

My grandpa was old school southern through and through. Said yes sir and no sir, dressed properly, respected his elders, took care of his family. I try to live that way but sometimes I feel like I'm the only one. My friends think manners are outdated. My kids roll their eyes when I insist on sitting up straight at dinner. But I believe there's honor in doing things the right way, in presentation, in discipline. I'm not trying to live in the past but these principles have real value. Anyone else out there holding onto this?