My parents and brother live in an area where a car is essential. There is a bus to the nearest town 10 miles away every 2 hours and it costs £6 each way. They run from 6am to 6pm. My parents have bus passes now but if they want to go out in the evening they have to drive.
My brother takes the mickey out of my DH, in-laws and me for not being able to drive (correction: needing to drive) and I have to explain over and over that we have very good public transport and it's not the norm to own a car unless you live in the outskirts of the city, which we don't. My mother-in-law has a car but she only really uses it to visit her mother (who's nearing 100) in rural Essex. She could get a train to the nearest station and get a cab but its much cheaper on a pension and quicker to just go by car.
So, in essence, circumstances dictate the best way to get somewhere.
Having no car hasn't stopped us having successful holidays or from visiting family and friends across the country. We've found public transport in the Belgium, Holland and Italy to be very good. In Spain and Portugal it's less good but there are usually tourist routes during the summer which suit where we might be going. We did a bit of island hopping around Dubrovnik and parts of Greece and it was fine. In the UK, the Isle of Wight has good bus links, as does Dorset and Sussex. We were going to go to the Peaks last year (but covid) where we were told buses were good.
Admittedly, there are some bits you can't visit due to jot having a car and some people find waiting for PT annoying but we are very used to it, living where we do.
In the future we don't plan to live in the city but in the nearest town to my family, so a car may be required, in which case we'll learn. But I have had lessons in the past and failed tests because of gears and lack of concentration, so I'd have to get a automatic or electric car. Incidentally, the Mayor of London wants to ban all cars from Central London including electric cars.
I'd love to see the diplomats ambassadors and Royals get the tube!