I am a bit older than you are having graduated from high school back in the mid 1970s. I rode bicycles long before that (starting at the early 1960s). I still ride bikes in the greater Los Angeles area as an "mature" (though not too old) adult long past the child raising stage-or any interest in-of life. Plus I taught elementary school until I return home to care for my now deceased father. I can attest to the increase of the speed limit even visiting my old high school just last night and seeing the posted speed limit up 5 miles from 30 miles per hour (a real eye opener).
Remember that many of us are now either past the prime child bearing years or even chose not to have children at all. That is a choice which might ring hollow for some "child advocates." It still should be a choice not forced or heaped on others. I have dogs & cats. As much as I am really into them, I do not bring them around others except in the proper circumstances that pets belong or go to.
So please limit the kid loving rather tiring hollow pleas to those forums & parties that cater to them. I was my own student's teacher & protector when I taught. I no longer am as the "children" are now all grown and long gone from the school system. That is the job of a teacher was and still is. I just don't need to perform my teacher role anymore since I moved on to another point in my life.
As this is a bicycle forum, I will state I don't want my 80+ year old mother riding a tricycle on the streets around here. Her life is just as valuable as anyone else'-including children. Everybody bleeds and suffers pain in the same way. It is bad enough that the kooks and the illegal undocumented immigrants that packed the streets around here have free license to run down anyone in their way (insurance & laws are for somewhere other than Gangland where I currently live, not suburbia). Until separation of the road or employment catches up, I will choose to ride just like I did when I was young-with no painted bike lanes or sidewalks to give me a false sense of protection.