What strikes me as the weirdest thing - and it is nothing to do with kit - is the kind of distances you take as normal. A relative of mine got her BSO out recently and puffed and struggled all the way to a nearby park. Describing herself as exhausted and drained, she reckoned she had done about a mile. And, indeed, that can often be the experience when you first start out. Maybe, like for her, that is the final cycling experience. Not many habitual cyclists can recall how every slope was a hill. (I saw a couple pushing BSOs over a canal bridge hump the other day.)
We stopped for a rest on a hilly sportive a couple of weeks ago. A passer-by asked how far we were doing. 50 miles, I said. I don't think she believed me.
Try driving to a place you habitually ride to. It seems a very long way in a car! yet, part of the therapy of cycling is to slow down and see the world at a more "human" pace. The ride is the journey, and is the experience. Life itself. Inside a car, the journey is a frustrating and resented waste of time. You see little. You are not engaged with the landscape or the experience. "Put the radio on!"
We are weird because we see the journey as a part of life. An end not a means. You can get on your bike and spend a couple of hours riding a circular route to get back to where you started from. To do that in a car would be seen as a pointless waste of time and fuel.