To be or not to be...

Today I was asked if I think it is shameful to trade crypto currency ... They also said that this is money from the air, and that this is not right.

Bitcoin is just as speculative as any other, gold, oil, bucks. If you can make money on it, then why not. Moreover, I risk my money, which I earned in real life. Why, this can be "not right"? All earn as they can. I do not do anything illegal like sellers tarkodillery or arms sellers.