Re: It's too Black and White
Taxi's are inconvenient and expensive.
If you want to visit a few pubs of an evening, or travel more than a short distance, the cost quickly adds up. The cab fare to where I spend many Saturday evenings is about £12 each way. Turn that into a proper night out and you're quickly spending more on transport than you are on booze.
Also there's no possibility of going for a few pints if you're spending a (fixed) fortune on cab fare. Autonomous cars open up more flexibility.