This is not a decision that 'humanity' took, only poor planning of cities which now many people take as just the way things are, their lifestyles largely determined by a very few number of men 70 years ago. There are many places that do it better. Bicyclists are often forced by law to take the unnecessary risk of riding with cars (e.g. by making it illegal to ride on sidewalks).

I have to admit that personally I find there's literally no topic like bicycles that gets people to jump from logical arguments to just spewing hatred (or total disregard) and your comment is just the precursor to the literal dehumanisation that cyclists face on roads.