people around the world are not adopting bitcoin because of those thing in general
1- security
2- regulation
those two thing must be addressed in order to rise the adoption of bitcoin
the secuirty can be done by the exchage(so it's not even a bitcoin fault)
the regulation is on the way on some countries, but need to be speeded up and should be easy for average people, not something like "i need to take note of every transactions" or other things too laborious
Now, the question is who will take the burden to regulate Bitcoin. That will hell of a responsiblity because it's known that Bitcoin has security concern. There are illegal trades happening all over the world and the payment is happening in Bitcoins.
Again with this non-argument, fiat and CASH is mostly used for criminal activitities, bitcoin is a small fraction of that, it's just not an valid argument...
USD is actually known as a currency which is used the most in criminal activities. This activity is even covered by the government which is involved in the money laundry itself from the countries like Iraq and similar. Criminals have a big market in which they are trading with their own illegal goods and the government is using Bitcoin only as a cover to mask the true currencies which are used the most.
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False news that is also supported by the government is actually influencing the modern society with the bad stories about the Bitcoin. Actually, this same false news is giving the popularity to the Bitcoin which will sooner or later be accepted by them all.