I'm driving a 16 year old Alfa romeo. It is 2 litres, makes me smile, and goes from A to B in something approximating a straight line (depending on enthusiasm)
I could perhaps save a small amount of CO2 by changing it, at the expense of the huge amounts needed to molish a new car.
My 16 year old indesit washes my shirts.
I've been married to the same wonderful woman for 32 years.
My house was built in 1969, and apart from a bit of extra insulation has needed nothing doing to it since.
I don't believe I need to replace all those things just because newer ones are available.
Same with 'puters. Word 2K and 2003 were no better than W97. In fact they introduced autonumbering and style handling bugs. I've kept away from the two latest versions as though they have plague. XP is good enough, and as long as I don't use IE and have my smoothwall box on the router, I don't get any problems with it. So I see no point spending money and time on an upgrade-for-the-sake-of-it.