Well....my E90 is my everyday car. It drops the kids off to school and does battle with the other cars in the school carpark and drive thru and it sits in the carpark at work all day.
The only thing I don't do is leave it in dodgy areas at night if I have to go out. That's what the wife's X5 is for!!
I wouldn't drive my mum or dad's car - somehow a 1996 Civic doesn't do it for me. And it would be a cold day in Hell before I let the oldies even try to drive my car!