It is indeed like heroin people get addicted to it and i think they even want to make it their daily job people made bitcoin their daily job and are so addicted to it they know everything about it and how everything works and they even earn a lot in just a week or two.
I don't get it as an addiction, bitcoin is an asset, a currency mostly accepted online and some countries, it is like you are saying that gold is like a heroin. Bitcoin is addicting if you are using this digital currency in gambling.