Many criminals choose to use bitcoin for a billion reasons. I don't blame them. In fiat money, if police finds out that a drug dealer sells drugs, they arrest him and then his millions go to government.
If he had (let's say) 1000BTC what would police do? There is no law that says "Police can then take his private keys and move his coins to a government's address". If the police cannot do something with the money then they will leave them to his address. Will these coins get lost? I don't think so. When criminal gets fired from the jail (if he went) he will still have his fortune, right?
In 2013, silk road's owner had saved in bitcoin 400,000$ (by that time's price!!!).
Lol you already called them criminals. When you’re a criminal, what exactly do you expect the government to do, give you back your money when it’s clear that you got them by involving yourself in criminal activities?
Lol, they are going to seize the money from you and then set up an auction just like they did the last time and the whole assets goes to the highest bidder while the money goes to the government pocket lol. Any money that’s not gotten legally, if you’re caught by the government, then you’re losing it as long they can prove how and where it was gotten.