The others have nailed it really. If we were all sensible then we would all be drving around in a 3 year old 1.1L 5 door average white car, after all it would get you from A to B. However, cars, like life, allow you to decide to spend extra money to get nicer things, even if they are not vital.
If you think its worth that cost then go for it. Failing that, get a loan and buy a second hand Mk6 GTI