Just to balance the argument...
They're not as bad as people would have you believe. Spend some time looking through the forum and you should get a feel for common issues. Properly serviced, maintained and not abused they're no worse than most other cars.
I'm not knocking other people's penchant for warranties, some like the (perceived) peace of mind. In my experience, most aren't worth the cost and I prefer to self underwrite mine. I do my own maintenance, I know what gets done (and how) which gives me all the peace of mind I need.
Spares prices are no worse than most other cars provided you stay away from the main dealers. Service items can be had from alternative sources for half the cost of dealer prices with no need to compromise on quality. I recently replaced my brakes, front and rear, for no more than it would have cost on either of my other cars.
Do some research, there are significant differences between model years. Work out what you need from the car and what fits in your budget. Don't buy the first car you come across and bear in mind that buying any used car is a bit of a lottery.
Hope this helps