And what if it's pouring down rain? Or snowing? And I just don't feel like becoming completely soaked just to go to the grocery store. There are lots of reasons someone might want a car over a bike. I actually have a bike and I do use it, fun fact I'm also a bus driver so I'm pretty fond of public transportation because it directly feeds my livelihood. However I have this neat little thing where I don't really sweat much even if I'm basically on the verge of heat stroke. So if it's anything more than like 60° F outside and sunny and I'm doing some type of cardio such as biking i will start to overheat.
So the majority of my bike riding is in the fall and winter months, but I do very much enjoy during those months when I can take the bike to work thankfully I don't have to go very far and I get to ride the local transit for free as a bus driver.
The carrying capacity of Earth is already handling the majority of Americans owning multiple cars, I'm literally only asking for enough parking for one car for each individual in the design of a building. Which is literally just a couple floors of a parking garage and you're over here asking like I want the end of the world. If you ever want to see Improvement in public transportation you need to stop being so extremist because it pushes people away from the idea entirely