But that means moving all the time. Yes you will trade yourself to the best house in the end and perhaps to a much better neighborhood, but moving can be a bit traumatizing...

One option is to move as you change jobs.

But tax law here also makes loss-making investment properties attractive to people, and borrowing against equity is another thing. Interest-only loans (as interest is a deductible investment expense), plus other expenses (all the better if it's in a nice holiday destination so flights and hotels to "inspect the property" are deductible), resulting in a minor loss on rent, which is offset against your primary salary and other investments.

Negative gearing like this allows people to basically zero out a house on the balance sheet and move on to buying another. Let it appreciate for a few years and you're ahead. Be a major voting base and politicians won't dare ruin your gravy train.