I have been riding two wheels for 50 years. Went through a phase of waving (two weeks worth), now I am like WTF, as I thought this is not a safe move.
Do you all wave at all vehicles when they pass?

Why take your hand off the bars to wave at another two wheel machine...I do not get it. It is not like a motorcycle is a rare vehicle...
Oh, how I love the idiots who are in a curve, entering or leaving, suddenly they change track and wave...Get you bloody hands back on the bars and ride!!
Then you get the hand down low wave, really cool...but again why?

Rant done, but I still have to ask why do you wave at other bikers?