Share your insights or perspective on the financial matter presented in the input.

Why is mortgage interest deductible in the USA for a house you live in?
Well quite a few countires have tax breaks on the first house you own ... this is typically to promote people to have atleast one house of their own ... having a house of your own provides lot more stability in the long run ... and without tax breaks it makes it difficult for quite a few to own a house ... the tax breaks form a motiviation as well ...  There are at times other effects of this breaks, people buying houses beyond their need [bigger house than required] or capacity [buying in a central / expensive location] by maximizing the breaks ...