Yeah but you had an R32 and changed because it was cheaper, not a mk5 GTI and changed because it was newer 
true.. but the MK6 GTI is better than the MK5 GTI 
Completely agree........10k better though?
Im not sure where the 10k figure comes in?? How much was a brand new MK5 gti??
Your obviously comparing new to old.. which is pointless. If you were to buy a brand new mk5 GTI now then you would be paying exactly what a MK6 costs. So what would you have a MK5 or MK6?? 
You are right mate, the point is people bought a new mk5 gti, it depreciated then they bought a new mk6 gti. Thats a loss of what, 8k on depreciation (say they sold for 15k) then buying the mk6 gti at around 25k, so another 10k on top. If you add it up its a loss of 18k, which is a lot of money for what is technically the same car (albeit improved)
Would explain the fierce defending of some of the people on here. I haven't noticed anyone trying to convince anyone else, seems most people are trying to convince themselves (or there partners lol)