It's a great option if you're in a situation where a driver is required...IE: hospital prodecures where they put you under. In some of the ones I've had over the last year I feel like I could have driven; easily. Yesterday. Uh, no.
And then there's the points of I don't like driving downtown, I don't like driving while downtown...hate the parking. I could drive and park, sure. It's 25 miles one way, and at gas prices that's what...$7 right off the bat. Parking if $5 for the first hour, a buck after that. I was there from 7-11. They offer valet parking: $10. IF I chose not to use a ride share? Okay, it would have saved me a tad over $20 yesterday...with everything I don't like.
A lot don't realize/consider how narrow everything is in down there. While it's never happened to me while driving, it has as a passenger and I can't tell you how many times I've seen people sideswiped downtown...people freak out in narrow situations and personally, I don't want to being the lane beside them as it happens.