“Roads are for cars only. Right?”
...and trucks. When bicycles and pedistrans start paying fuel taxes, they can make claims on the roads also.
What bicycles should be doing is tolling themselves to pay for bike lanes, that are clear of roadways. Either GPS-based tolling, or requiring something like a $50 license.
That'll probably be about as effective as a pet license, and we'll end up with the same result...packs of feral cyclists roaming the streets of suburbia, knocking over garbage cans and crapping on well-tended lawns because their owners wouldn't take responsibility for them, or they got dumped there because their owners didn't want to pay a minor fee to have them euthanized.
Just sayin'.