Mining is really profitable but that was before because there where few miners on that time so they get a good share of the coins they mine but now it's really not that good specially here in our country. You have to consider many things like the cost of starting it up,you need to buy latest GPU to be at par with other miners,using ordinary computers are slow and will not last long,the cost of power usage is also an important considerations as it really consumes a lot of power so setting it up in urban area is not a good idea or even in some provinces as the cost of electricity is really high so the ROI will took some time maybe a few months or a year which is not good investment at all.