I went riding twice this weekend and passed a total of maybe 40 riders here and there. Of those maybe 1/3 didn't wave or say hello. What's the protocol (if there is one)?

The funny thing most of the guys in their pro gears and fancy bikes yelled hello or waved hi, it was some of the less fancy riders (like me) who didn't bother to even look my way. What peeved me off most was that I passed one woman (I passed 2 the entire weekend) who actually looked at me and looked away as I waved!

I don't get it. Do most of you wave and say Hi? I felt like a total turd waving at these people only to get the cold shoulder. I don't take it to heart but just don't get what the deal is. Maybe it was that I had been out there for 2 hours and I stunk?