I have an old mountain bike (80's) with new but cheap or recycled components and I've done with it thousands of miles loaded with fridge and sink. In times I have to use the poor thing while raining, snowing every single day. It is still in perfect working condition, the nicest bike I have ever ridden.
The only new bike I had, was an old bmx when I was a kid. Is the joy of getting a new bike so strong?
There are so many nice bikes out there, almost dead from obsolescence, waiting for someone to resurrect them, why buy a new expensive one? You will lose the joy of making it work as well. I don't get it.
A good old steel road bike is so much slower than a new hi tech carbon one? I seriously doubt it.