I am from the UK and have seen two major property booms and busts.
The big problem is when you borrow on a variable rate mortgage and interest rates soar.
At that point monthly repayments represent such a proportion of some peoples’ nett income that eating in (not eating out) becomes a financial problem.
However, in the majority of areas only a few properties really change hands, so provided the monthly repayment is manageable the ‘value’ of the property is not material.
What happens is that a few people hit the three Ds (Death, Divorce, Disease) and they have to sell - regardless of price (actually add Redundancy and Unemployment to that).
In the original poster’s case, I agree with the ‘price of tea in China’ approach.
The ‘interest only’ mortgages are actually not so daft, conventional repayment mortgages are pretty similar, and always have been. With a fixed monthly repayment (even if the interest rate is flexible) it is pretty easy to see that in year 30 one is really repaying 95% capital. It does make sense paying off the capital faster if one can, but it is not particularly important as one should be able to find a savings ‘vehicle’ that allows one to slap down the last repayment.
In the UK Interest used to be tax deductable, but that was phased out during the 1980s, and very sensibly so. You cannot do it quickly because it would crunch the market, but the way we did it was to restrict it to the average house price and then to the lowest tax band, finally abolishing the whole thing.
The subject is close to my mind as today I have had a stream of people looking at my rather interesting appartment (which is like its owner, slightly tatty, but basically very good stuff - a snip at $470,000 ).
To the OP - don’t worry, but watch out for interest rates.