Personally, I do quite a few miles to get to work and back - typically 300 miles or so a week. Hence the reason why i want a relatively new Golf with lower miles on the clock. I tend to keep a car for a very long time - my current car is still my very first car I ever bought, which is around 8 years ago now! Hence the Golf will be staying with me for a long while as well - Im not one for changing cars very often at all! That, coupled with my relatively high miles, justify my reasons for going for a newer, lower milleage, vehicle.
Now what about you? As jv just stated, how many miles do you generally do, or expect to do in your Golf? How long are you looking to keep it for? A VW s generally a very reliable car, and many people think that a Golf with 70k on the clock 'is just getting warmed up'!! TBH I wouldnt rule out a fully loaded Golf at a good price just because of its miles. These cars are built to last a very, very long time. As long as it has a full VW service history, has had servicing done on a regular basis, and looks like it has been looked after, I think you would be pretty safe with it.
Remember, theer are plenty of people with a MK1 Golf, with tons of miles on the clock, and still purring almost like new!
If we were talking about a Ford, I would have said avoid it like the plague TBH. But considering its a VW I wouldnt rule it out completely at all.
Then again, remember that its not a small purchase. Make sure its somet you will be happy with, really truely happy. Dont get it for the sake of getting a GTI quickly. Take your time if you can. The right car will come along

For example, Im starting to look now, but have until June to get mine! If one comes along before then, I may go for it if I hav ethe money. If not, then I'll wait and continue to save until the right car comes along at the right price.
Dont rush!
Hope that helps.
