Driving requires you to be constantly alert, and if you screw up or don't react fast enough, you can straight up die because of it. On a bus, you can be on your phone, read a book, take a nap, whatever. Driving is a much worse experience and even if public transit takes more time, that's time that can be used doing things. That's before factoring the cost (the car itself, gas, insurance), the environmental impact, parking, etc.