U r so rite. I've been riding in PE for 2yrs and often my wave or vocal hello also gets no response. My sister-in-law came down from Jhb this weekend & she also commented on this. She's been riding for 4yrs (rd & mtb) & said when yr in the pack, the guys have been really friendly but the ladies just dont greet... Road cyclists are especially guilty. Mtbikers are really great and always say "hi" or "how u doin" but Whatz up with the roadies ?? I'm also a runner and runners have always greeted each other in passing. It's no skin off yr noze to greet guyz & especially dollz. Rookie cyclists might not look as great or ride as great but what the heck ?! a smile or a Hallo or wave will not cause any pain it actually makes the journey more enjoyable