Because the whole point of money is to have a fixed supply. #Bitcoin is the perfect money. 
Discussion
"Because the whole point of money is to have a fixed supply."
where did you pull this nonsense from?
That wasn’t ever the point of money
Without a fixed denominator you can neither store, nor measure value over time. Simple.
Encourage you to spend some time in the non theoretical world and come back to this statement. Try a role in procurement or anything really where you have to constantly value real things and there’s consequences for getting it wrong.