Good thing I don't live in those places then. But I do live in a place where the roads were built for cars. And separate travel passages were built for bikes. Yet bikes are all over the roads. Can I take my car on the bike trails?
Where do you live? I am genuinely curious. This is a local issue, and you are speaking in global platitudes. If no one near you wants to bike, fine. Make everything an interstate. But if there are bikes all around... it appears someone near you does want to bike.
I doubt the bike trails near you are even a minimally spanning tree of every place a person needs to go.