It is very profitable if you invest well. I currently am very happy with my returns from genesis mining. They are not a scam.
The only people unhappy with their returns are people making minimum investments and hoping to get rich quick. It is a mining operation so you get returns based on the hashpower purchased.
Always check your profitability of your investment before purchasing so you know what you are getting into with a mining calculator site such as coinwarz.com
That will give you a good idea of your return on investment. My other advice is to compound your earnings towards upgrading your hashpower on your contracts. This ensures you profit the most and get your ROI the quickest.
I hope this helps a little bit. Feel free to message me with any questions you may have.
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