To judge if bitcoin is worth to invest in, you may consider this universal monetary rule:
There is NO good, easy, risk free money, that is available for everyone.
If the money good and risk free, it is called a heritage and it is not available for everyone.
If the money is good and available for everyone, its is called an entrepreneurship and its not risk free nor usually easy.
If the money is risk free and available for anyone, it is called a salary, but that is usually not very good.
If anyone claims, that money is good, easy, risk free and anyone can get their share of it, it is essentially a scam. Doesnt matter if You are being scammed with money, electricity or just waste of time. It also doesnt matter if there are several people who get scammed big time at once or millions, that are scammed bit by bit, it is still a scam. Any deal, where people are attracted with false promises and where the nature of their investment is kept hidden by purpose, is a scam. Bitcoin is not what promised and that fact is being disguised now.
All the propositions relating to salary, enterpreneurship etc didnt really go well with me, but the the fact tha btc aswell isnt in any terms easy, good and readily available is a well thought point.
Earning btc is a hastle, buying it is another big deal. And the stability and trustablity of bitcoins are quite shaky at any point of time. While people have turned millionaires with it, some also brough lots of misfortune when ut went down or rather crashed. So btc is not something that can be termed easy and good money. Its very very risky.