EXACT same boat myself Seb...
My justification is I can get a more powerful car with a same or bigger engine that is cheaper to insure and gets better miles per gallon! Very hard to argue against any of that.
However..... everytime I clean and wax my car, and sit into it, and then just start it up... I know why I love it. It sounds great, it looks great, and there are not many of them, so when its clean its a real head turner.
It's lovely to drive too, and... its the most reliable car I have ever owned. 4 years and nothing... not a thing. a number plate bulb actually, thats it. Fair enough I looked after it well, and its been garaged since I had it,, but I did that with all my cars and still had random issues with my Ford and Alfa.. (no jokes please) The FTO has been bullet proof. The most important thing for me is the sound though. I'd need to go for a 6 cylinder or 8 cylinder car I think
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the V6 just sounds too good.
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Ultimately it will have to come down to running costs.
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I could pay them ok, but as I say, with petrol on the up (and 28mpg max)and insurance issues, its just really hard to justify the hassle. If the car got 35mpg or 40mpg I'd keep it for good.