One thing to say mining bitcoin consumes a large amount of electricity and it would take lots of equipment to manned the mining. There should be a development in making the cost of bitcoin lower; given that lower mining cost could yield a higher profit. However, it matters on trading and exchanges.
that's true, but I think you have less knowledge about mining and its techniques.
I think if you are interested I suggest you should discuss more at the mine board, there are many who share knowledge for easier in mining.