Nearly every car I've ever sold I've sort of regretted. I look after my cars and don't sell them because there is anything wrong with them, but just because I get bored with them, usually after a year or so......
Having said that, the missus drives the Golf and says I am not allowed to ever change it......
We've had it 18 months now, so looks like it might be around a bit longer....!!??
But if you have itchy feet or lifestyle issues dictate a change then so be it ( a 3 door wouldn't suit our family circs...)
But the performance of the GTi spoils you, it will be hard ( ie expensive!) to replace....!