Think about this if you are ever feeling like Bitcoin is failing, in 2009 when Bitcoin first came out, you could get 1,000 Bitcoins for $1! That's about $54,000,000 now! But if you saved that $1 in fiat till now, if you tried to buy an item that same item would cost $1.46 now.
If you still don't get it I don't have the time to convince you.