The few times I have been without a car, I avoided going anywhere because having to Uber makes it very real how much I'm spending just to go out each and every time. Like going to the park or to the grocery store. So instead I sat inside.
I'll never go without owning a car again. The ability to travel freely and not feel some psychological burden about doing it is more than worth the cost of a car to me.
NOTE: This is based on my experience living in Austin, Seattle, Memphis, and White Plains NY.