Just don't invest your money in the so called "cloud mining" sites, because most of them are scams and ponzi schemes. Even the real mining don't worth nowadays unless you have really cheap electricity
I also think its okay but if we are indeed talking about cloud mining its the baddest thing you can do honestly because investing in mining is okay but cloud mining is just one scam party
Setting up a mining unit or farm is not feasible to all of us, a very big capital amount must be needed for achieving this. That is the reason people are simply going for cloud mining and most of them are struggling with that. Investing in mining still worth if we work in group like many people are forming a big team and will be working on setting up a mining farm definitely will bring us good profits.