I recall in the 60's & 70's, folks here in Florida used to say good morning, hold the door open for each other at the store, help folks unsolicited. It was very different from where I grew up in NY.
I think we have too many Yankees here now. You see very little common courtesy. The reason I suspect we're getting yankee infested is from the 3 new curse words I learned recently at a crosswalk.

The guy was in such a hurry for me to get out of his way he started cursing at me. So, I just walked little slower.