Adoption is another word for "Network effect" - The network becomes more valuable the more people are using it. This is not a new invention.
History is full of examples of huge networks that eventually turned useless when a better network came along. Remember MySpace? ICQ? FriendFinder?
Have you heard about
Tether?
Fixed supply is not a good thing.
Having fixed supply of currency that doesn't grow with the economy, leads to hoarding ("HODL") and
deflation.
This is exactly what is happening. Prices (in terms of BTC) are falling, or in order words, deflation.
You should really learn some
Economics 101.
Honestly the fact that such a clueless person like you made any money at all, is all the proof I need to see that it's a giant ponzi.