Do you and your kids take public transport regularly? In a failing city/society, that is.
Because if the answer is "yes, I do take public transport in a city that struggles to pay its bills and I still don't care that the chairs have weird organic substances on them" then fair-play to you, but for me personally at some point I had to purchase a personal car (when I was already approaching my mid-30s) because I just couldn't convince myself anymore that it is ok to not want to sit down inside of a train ("better stand up by the window, that seat is too dirty").
And these robo-taxis will be worse than public transport, for the main reason that there's no-one "standing guard" inside of them (and, no, Big Brother cameras placed inside of them, which should be a dedicated topic all by itself, btw, really won't change a thing in that respect).