I do not think it's true for bitcoin miners to see that bitcoin is currently decreasing if you do mining, then what you are struggling will not match what you get. My advice if you want to do mining then it is better if you choose a better altcoin and more dominant in price issues. Because mine requires patience and persistence so that everything can be smooth.
Although the mining method is stable, but the yield and return are relatively long-term, I still recommend the speculation and mining at the same time.