I heard that we can make much money by mining Bitcoins before, but now we cant anymore. Why?
In actual we are at that destination where about 80% of the bitcoin is already mined . Now here mining is a profitable as well as non-profitbale business because it depends upon the location of the miner for those people who have electricity at cheap price and have cool environment can make profit from the bitcoin but where electricity is not cheap then there you can't make much profit .
Since in the starting mining was not difficult but we are towards 80% mined bitcoin.
But here you can make mining profit by making mining of etherium , dash like coins much because these coins are at initial layer of mining and also there price will increase much , so beside bitcoin we have lots of chances .