Trading, investing, honest borrowing, freelancing, signature campaign, those are some moral ways to get Bitcoin. Usualy they are long term and not the most profitable over night.
Stealing and scams are probably the most popular immoral ways to get Bitcoins but I wouldn't even think about this ways and not suggest them. Although some people don't have any problems with that.

Best moral way:
Buy a decent amount of Bitcoin and hold it without touching it for at least 5+ years. Not a sure way of becoming a millionaire, but with some luck it's possible.

Best immoral way(s):
Sell drugs on the darknet for Bitcoins, though some people might not find this completely immoral.

Turn into a scammer, pretty sure just about every decent human being finds this one immoral. 

the answer to this question is the same as the answer to the other 10000 questions asking about ways to earn bitcoin:
"the same way you are earning money you can earn bitcoin too" and the consequences of using each of these methods are also the same. which means using a legal way, you earn clean and honest way and you have nothing to worry about. using an illegal (immoral or whatever you want to call it) you make dirty money and you have to sleep with one eye open for when you get caught.

the immoral way is to scam everybody know it, like the hacker of bitfinex or all the other hackers, the moral way is mining or selling stuff for bitcoin

What would be immoral for one, would not be immoral for another... take porn for instance. Some people think porn is highly immoral and

due to their religious believes forbidden. Other people have zero problems with porn, so they would not find it immoral. I think if you have to

steal or commit some sort of crime to be a millionaire... then that would be immoral. Do not harm other, to get to the top.  

lots of good ways to acquire bitcoin, my aggrieved immoral way is to be involved in the inside job hack of bitcoin exchanges and other hacking methods of some personal wallets. It does not present the community safe for new adopters and it is criminal, Laws should be proffer to punish such dastards acts. 

Best moral way: Get a time machine, go to 2010 and mine the shit out of Bitcoin with as many computers as you can get your hands on.


Best immoral way: Open an exchange, fake the price and fuck as much money out of the world as you can. Run some sort of illegal business and rip off the world.

If you don't have moral standards, might as well hack everyone or everything. Scam people because you don't care about anything, or how much they've worked for it and what not. There's no immoral thing that would make you a good person, it is always bad.

Then i am glad that you're here.

Build a good business that accepts bitcoin as a payment method and brings value to it`s customers.

This is the only legit way to become a bitcoin millionaire.

I don`t want to duscuss immoral ways.