I think I made my point pretty clear above - many people who buy new or nearly new Corsas do so under the assumption they cannot afford anything else, when in actual fact they can. I simply used the example I had experienced to make a point rather than suggesting everyone with a Corsa should have done that becuase quite clearly that would be stupid.
For the same price as a new or nearly new Corsa, you can buy so many better cars, including Ford Focus, VW Golf, Toyota Yaris, Mazda3, BMW MINI, Fiat 500, etc etc etc.
But no - instead people have the most bizarre things in mind when purchasing a car. Did you know a proportion of people will buy a car simply becuase the local dealer is near their house? Thats right, they'll buy say a Corsa becuase the Vauxhall dealer is 3 miles closer to them, even though the car will need to visit said dealer once a year at the very most. Or they'll think blimey, if I get the 1.3 CTDi Corsa, it might be £1500 more expensive, but it only costs £35 a year to tax! Crikey, got do to that. Or they'll ignore a superior car from, say, Toyota, becuase their Dad had a Datsun once in 1970 and it rusted and Datsun are from the same country, right?
Every day thousands of people buy cars after not bothering to educate themselves or make an informed choice first. It's quite sad to see, really. Nothing wrong with buying a Corsa if you've sat down, worked through the rivals, considered its the best for your needs etc etc... but most Corsa buyers simply DONT do that. They pop down the road, see one in a pretty colour and finance it up large. Half the reason the economy is in the mess its in, really.
I don't expect you to understand, didnt you spend £18k on a diesel Zafira?