Its difficult to own a car in SF these days. I was out there in 2019 and one of the drivers said there are 10,000 uber/lyft drivers in the city (most drivers are signed up for both companies). Often I could call a cab in the hotel room and it would be waiting for us before we got to the lobby. I used both as both had offered vouchers for the first xxx rides.Never once used an Uber. I have used Lyft when I was in San Francisco a couple of years ago, but never used an Uber, or similar, over here. Just never had the need to.
My main issue was the airport when I landed as lyft and uber are not allowed near the terminal and they have to go to the main car park and up a few flights of stairs. I found this to be the case in many airports now. Not a huge issue but if you have just done a long flight with young kids and lots of luggage its just something to be aware off.