Do strangers you help....?

[BobcatBomber]

Say thank you or show appreciation?

Or do they carry on with barely acknowledging your existence?

The latter just really grinds my gears...

 

[4cards]

..most people say thank you if you open the door for them and those that don't I might (depending on my mood) say "you're welcome" which usually triggers a belated thanks or just a look.