Depends on how old they are. If they're my age then whatever, there's still time. If they're older then it's a problem. Generally, I prefer drivers to non-drivers because you have more freedom when you have a car.
Current boyfriend is in his 30s and if he couldn't drive I'd be worried. This is probably the best relationship I've ever had because he can drive and we can go places and do things I couldn't do in past relationships. Like, for my birthday I'm hoping he'll take me to Southend because they're doing fireworks there on that weekend. I've AWAYS wanted to go to the beach for my birthday but my family always found reasons against it and my friends can't drive so it could never happen. Now I have this guy I can finally do this stuff. It's just more fun. I hate being limited to London which is what happened with past boyfriends but this one likes to take me out for the day to different parts of the country so it's really cool.