btc is defined as money in many countries, at least it is a digital good, anyone who steals your earphone is illegal, therefore stealing btc is also illegal.
Use better real life implications ,man! I get your point but stealing bitcoins is governed by a different set of protocols than that of stealing a earphone.Stealing bitcoins is linked to more of a Cyber Crime rather than a asset theft.I'm sure they'd have different laws or depending on the jurisdiction.
I dont think stealing bitcoins can be seen as illegal because there are allot of activities going aroung with the bitcoin that are also not really legal so i dont know how you can see something as ilegal and legal with the bitcoin.
Well mister,investing in a ponzi is not considered as illegal since they're not "moving" your coins out of your wallet to theirs neither forcing you to invest,its completely your decision.What can the government do if you fall for money doubling schemes?