In Australia, we call it the population (or migration) Ponzi.
Another way to look at it is - you're essentially borrowing from your future generations, in order to fund your current lifestyle.
Those future generations are going to be the ones looking after you in your old age (through being taxpayers to provide services - or in some cultures maybe even literally being the ones to house/care for your), and also because that's how your culture/society continues. Society/culture is more than just a input/output machine that eats, s*hits and sleeps.
I don't particularly like the arts, but I understand that as a whole, our government funds things like that for the betterment of society.
I am fortunate I don't have any major disabilities - but if I did, I know my society looks after those less fortunate (or I hope they do).