Unless your looking forward at a higher price for bitcoin in the future.
Not everything is about the now profits..
So you are saying buying a miner for 0,22 BTC that DOES NOT make 0,17 BTC within 2 years is a great investment?
Well, this is where I pass... I will NOT buy any miner if the amount of BTC (or BCH, LTC or ETH) is -lower- then the BTC, BCH, LTC, ETH I allready own.
Sorry, but it the most stupid thing you can do with your Cryptoś right now...
Investing and not gainging the amount of BTC you pay

Maybe I am stupid, but I don't get that.
Be me guest, if bringing your BTC to lower numbers then you allready own is your goal.