Originally Posted by FBinNY

I haven't read every post, but I don't think anyone here is saying there's anything wrong with greeting people.

However the OP said he's making it a point to continue until he gets a response, and that's what I and others are responding to. At some point friendly greetings cross a line to something negative if one persists in the face of no response.

I have no idea where that line is, but persisting until you get a response, could very well produce a response other than the one desired.

As I posted early on, I tend to greet folks along the way, but I'm not invested in whether they respond in kind or not. That remains their choice, and my greeting doesn't somehow throw an obligation onto anyone else.