it's a very nice shade of blue, I used to have VW beetle that very same colour, I got waved at a lot in that car, mainly by other men as I later found out it was voted gay car of the year
I think you mean "new beetle", i.e., water-cooled, front-wheel drive, with the dainty little flower vase on the dashboard
, as opposed to the air-cooled, rear-wheel drive, go-anywhere old beetle with a header exhaust that sounds like a WWII fighter plane.
Of course, there are exceptions.
OK, here's my rant: As for why many folks don't wave as much anymore, I think it's because society as a whole has become disconnected and aloof compared to earlier generations, probably as a result of television, movies, the internet, and now cellphones. The youngest are the most affected, and each generation seems to be more aloof that the one before it (Jeez, I sound like an old f@rt, don't I?).
An increase in population density also plays a part, I'm sure. I used to think people in New York City were rude until I realized that they're simply abrupt, and for good reason. New Yorkers have to deal with so many people in a typical day, and for them to acknowledge every single person they see would be to invite multiple possibilities of someone slowing them down and keeping them from getting to where they're going on time. Not a big deal to wave and say hello to the occasional individual passerby, but imagine the time it would take to acknowledge each one if there were hundreds of them. I think that's where roadbikers are misunderstood; their mission is to go from point A to point B in minimal time, whereas a cruiser or mountainbiker is out to have fun, and doesn't mind (or even welcomes) the occasional distraction.
There's also the exclusivity factor (snobbery?). It used to be that Jeep owners in the USA would wave to one another on the road, but with the advent of the Jeep Grand Cherokee, suddenly Jeeps were mainstream, and the newbies simply didn't know the "protocol" and so they didn't wave, and were thus viewed as snobs by the "Old Guard" of Jeep CJ owners. That same Old Guard could be viewed as snobs by others because they only waved at people who were members of their exclusive Jeep CJ clique.
Then there's the fact that many people are simply oblivious of the fact that there are other people on the road, in their lane, on the planet, etc. The guy who stops in the middle of the path to look at a map without thinking that someone else might come along is a prime example. Another example: a friend of mine used to get to the end of an escalator (whether up or down) in a shopping mall, and then he'd stop and look around and decide what to do next; meanwhile more people are being deposited behind him at the end of the escalator, and eventually someone has to push him out of the way. That had to happen to him several times before he figured it out.
Then there are people who are unsure of themselves and are so focused on what they're doing that they don't even consider anyone else.
There are also many people that are suspicious and mistrustful of strangers saying hello to them. Their instinct is that you obviously have an ulterior motive that is less than honorable.
The best attitude to take IMO is to not let it bother you. I wave to people unless it's a non-stop sea of passers-by, or if I'm doing something that requires my full concentration (hill-climb, wheelie, navigating obstacles, etc.). I've learned that some people (teenaged skateboarders, for instance) will return your wave with a single-finger "California Howdy", and it's not worth getting upset over. Just enjoy yourself and don't let the little stuff bother you. As for the dangerous auto drivers, well, that's another rant entirely.
Life! Life, do you hear me?! Give my creation LI-I-IFE!