20months ago I was ready to spend £10k on a 3-year old Civic Type-R. But no one would insure me (too young). I then learnt that it would cost me £800 on insurance whether I spend £400 or £4k on a small ~1 litre car. I couldn't quite justify spending £4k on a box on wheels. It would've been quite crap (slow and small), but as it would also be "decent" in terms of mechanics and looks you'd have to look after it properly which is a further cost in time, effort and money. I can justify all those costs on a quick car though, but as that wasn't an option...
So, I went out and spent £210 on a 15 year old Uno, spent a couple of hundred on tax and simple maintenance stuff and was up and running for a total of £400.
Over the past 20 months total cost of motoring excluding fuel and insurance has been about £1200 and that's excluding the £400 I've just sold it for recently.
I also earnt £4k in business mileage, but disregard that from any calculations as not everyone has that privilege.
The other £10k I had to spend before? Well, I topped that up with money from my student loan and 0% overdrafts and purchased an investment property. I now live completely cost free at Uni.
The recent upgrade to a VTi has meant I'm half way there with the Type-R performance and can actually get insured thanks to the 2 years NCB earnt.
The point of my post? Well, most people can be clueful about financials if _want_ to be. Or rather, do actually want to do something to get there and not just dream about it all day. Most people can cut all non-essentials for 3-5 years and after that period can really be in a position of finacial freedom. I'm 20 now and like the idea of not having to work in a crappy 9-5 job after 30 years old. I could be at home all day with my kids/family or on holiday every few weeks or whatever.
As for the status/image thing. Well, having an image IS a cost. So factor that in. Is the image actually worth x or y?
I, personally, love it that my Uno was so reliable, yet so cheap. Friends used to laugh, but they never even had a car because all they wanted was the latest expensive stuff. I also like having the low profile and limiting my true "personal profile" to close people that do actually know me.
It all comes down to happiness and what people are happy to do. My advice (or comment) to the OP is that, I think your points are very true and valid. However, don't spread them too much. The fact that MOST do one thing, means me/you/we/anyone (who are the minority) can actually achieve a lot more in other ways to benefit ourselves. If no one bought new cars all the economics of used cars being cheap will no be the case. Get the idea?
It's a bit like only 10% of the population own 90% of the assets. If you follow the majority everything (costs/price) is most likely already factored in.