10% per year is already huge!!!
If you ever get this constantly, this is better than putting your hard-earned money in your bank. Plus in the long term, you will still earn much because of compounding.
But in reality, this is not how Bitcoin works, sometimes we can get more than 10%, or sometimes is negative

.
10% is way more better than on what banks do offer on which in speaking on per annum basis on which hands down or there's no doubt that you would be saving up your money in Bitcoin form.
Just like on what you have said that this isnt how Bitcoin or crypto works and even if we do speak about "What If's?" then it will something that drive out people to go for another venture.
We do know that people doesnt really like on really just that having on potential 10% per year kind of gain but rather it is really that something more better.
People will really be just that basically be trying out to find that could give out that x2 of their money or even more.This what makes that this crypto market do really looks interesting because of that kind of
probability or opportunity that does it give.
If it wasn't really be on this way then we wont really be seeing that huge funds that will really be flowing into this market. This isnt something that you can be able to compare or
trying out to look it similar on what those traditional investments or set-ups do really give out or offer about.