What is with Push bike riders

Whats the deal with push bike riders riding on the road like they own it or something, when in fact they DONT pay rego for their shity 2 wheeled contraptions and they dont ride on the footpath cutting grandma's and mums with prams down with wild abandon (i remember that what we used to do when we were kids). When did the good times end?
How come nowdays kids wont ride on the footpath and run over dogs and stuff like that?
Was there some law passed stating that no push bike shall pass a walking person?, Was it the gandalf law (NONE SHALL PASS!!!!)
either way i am vbery unimpressed, when im driving to work i expect to be able to drive at 60, if the speed limit is 60, if the speed limit is 30, down a hill, cause thats all the pushbike dude can manage then sure, but if the speed limit is 60, and he is doing 30, it should be law that i can legaly run him down if he gets in the road, now whether or not he chooses to get caught in my front grille and i still have chunks of his hair in there for weeks to come, is his choice, BUT it should be my RIGHT as a rego paying driver to run him down if he gets in the road, i would only expect the same for myself.
ALso got my New SUPER sexy home speakers and sub of doom!!!!
see picture:

Sexy HUH!!