“Bitcoin isn’t about getting rich quickly, it’s about not getting poor slowly through inflation”
Fiat currencies are inflationary at very high rates but Bitcoin is inflationary too. The thing makes Bitcoin better than fiat currencies is it has only 21 millions cap that means with time, inflation rate will become smaller every 210,000 blocks (about four years). After 2140, it will become deflationary but I don't hope to live till that year.
Same total supply, population continue to grow, demand on Bitcoin will grow, it will help price.