Bitcoin is inflationary until the final halving of 2140. Until then, new bitcoins are given as rewards to miners, increasing the total supply until the cap of 21 million is reached. This means your savings and stackings will be losing purchasing power due to bitcoin inflation during your, your childrens' and your grandchildrens' lifespans.
These 120 years are critical to spreading adoption, because if by year 2140 people aren't using bitcoin for transactions, there will be little economic incentive for miners to validate payments and receive transaction fees. If miners start dropping off, the clearing time of transactions will increase, further demotivating people to use bitcoin altogether.
How do you feel about this? Where will bitcoin be in 2140? And, where will you be in 2140?