Yes it is worth bitcoin mining if you can take and sustain and face the risk of the investment you did at first place. A good mining rig is very expensive and yet the electricity too. You will suffer at the beginning but you will have a good profit later on.
Exploiting Bitcoin is now very difficult, not as easy as it was a few years ago. To exploit bitcoin it takes a huge amount of capital to buy hardware, along with a high monthly bill for electricity bills. So I think it is only suitable for centralized mining.