I was wondering about mining profitability and i think it's not worth it to get in. I mean you must get asic miners and the minimum to mine with is i think at least 10 TH/s. Even if you make enough money to pay electricity and still get some $ you have to get back the amount of the machines. I know there is cloud mining but that doesn't make that much and not stable. The blockchain is heavy and there are just too many people already mining who are your "concurrency".
So what do you think?