Earlier quoted context omitted.
Cycling is risky. I've stopped cycling on roads with cars because I realized it's just a matter of time until I get in a serious accident. https://www.washingtonpost.com/express/wp/2016/05/12/how-saf... I'm with you on the mandatory helmet issue, I don't like it either, but mostly because I don't like needlessly restricting ones freedoms, if you want to risk your life, that's fine with me as long as you don't risk ot…
Cycling is only risky due to the shared infrastructure with cars. The thing that raises the risk is cars. We should all be demanding that our streets are made safe for all users. We already have sidewalks in many places for this reason, we just need to extend similar safe infrastructure to bicycles and other road users too. Just throwing your hands up and not asking for change is a sure way to not improve things.
Use of shared infrastructure for all vehicles is risky when the rules of movement (position and right of way) rules are not followed. Some cyclists do not follow those rules and end up in collisions. Other times, authorities paint lines that guide cyclists to ride in unsafe areas (too close to the edge of the roadway, or too close to parked vehicles), or designate areas for cyclists to ride where they're hidden from the motorists' view until both enter the intersection.
When one follows the rules of movement and rides in a predictable manner, that risk is largely eliminated.
> We already have sidewalks in many places for this reason
Sidewalks or side paths that have cyclists follow pedestrian right of way rules on approach and through intersections simply doesn't work. The reason is that cyclists move much faster than a walking pedestrian. Pedestrians walk between 2 to 4 mph, while cyclists ride between 10 to 20 mph. A pedestrian that's within a few feet of entering the roadway can be seen by a motorist in time for the motorist to stop and yield to them. On the other hand, a cyclist can be 50 feet away and not seen by the motorist before the enter the intersection. So, instead of yielding, a collision happens instead.
Cyclists move closer to vehicular speeds as opposed to pedestrian speeds (you can't ride in a straight line when going at walking pace). It makes sense for them to be treated like vehicles and follow the same rules. The rules are designed in a way to accommodate vehicles moving at different speeds.