i think Bitcoin is only profitable if done at large scales. you must get expensive mining equipment and of course it consumes a lot of electricity monthly. Also its usually much more cost effective to buy Bitcoins with this money instead of using it to buy mining equipment.
If you can invest a lot of money, then go to mining since it will be needing a good set of computer system to mine large amount than the usual mining rate. In return, you will surely receive a lot of money through it even though you have alloted money in the electricity, equipments and others. But if you want it instant then go buy bitcoin and wait for a price hike where you can get profit, it is dangerous note that.