I love to ride but our winters get pretty miserable. Not year round. OTH, the people who are riding in slippery and poor visibility conditions need all the help they can get to arrive safely at their destination. My rides are usually short. I live about 4 miles from town center and can quite happily stay close to home most of the time. Work is nearby too. I live in the a smaller city/township of about 60,000. When I visit Portland, I take the roads by car just like everybody else. I wouldn't go there and spend money if I had to walk.
This is a small tax added to a yuuuuuge highway bill. Rural areas most definitely can't pay for highway maintenance on their own. In some counties, the county roads are a joke. You only use them if there isn't a state highway nearby. Highways are a public asset used by everybody and of critical importance to commerce and the economy. Absolutely no way that a farmer can pay for maintenance of all the roads in his area.
How else do farmers get their crops to market? They don't walk. Would ox-carts be an acceptable replacement for roads designed for heavy, high speed vehicles? He might be able to keep a rutted dirt road open for a few months out of the year. Then again, cities need to do business with those same farmers and our roads make that possible.
@tampee is approaching the level of Rob Roy with his current line of bitching. City people are definitely subsidizing his access to good roads. The public benefit goes both ways. And, if you don't like the bicycle tax, there are plenty of good used bikes out there that can be had for a lot less than the new ones that have $15 tacked onto them.