Well, i suggest you, most of the sites are scam, But not every site, and if you want to invest your bitcoins into any cloud mining site than only search about it and may be your friends are doing it than you take help from them, and if you get trust-able mining site than in the start invest your litter amount.
Yes agree, we can say 2016 is the best year cloud mining scam, according to the data of approximately 50.000 btc lost stolen cloud mining scam like hashocean, topmine, and many more. Never invest again to cloud mining. stop cloud mining now and forever.
How do you think of Hashnest?
It is true that cloud mining is full of scams, but it is very possible that situation can change - just because of price. All depends from users and investigation that they make before investment.
Right now i'm testing two-three cloud minig services, and still i'm not sure about their legitimacy, so i will not write names here.
About HashNest, i can say that this in my opinion the most trustable cloud mining on market. I can not give them 100%, because i don't trust so much nothing what is online, but for sure i can say that they are the most legit at the moment.
I agree with you hashnest is the most legit cloud mining service at the moment, unfortunately the legit cloud mining service doesn't mean will get profit from there (it is just can be trusted) because as we know the difficulty of bitcoin is increasing and our hashing is not increasing, will be hard to return of investments on there.