Yes, @daljeetmyd, Bitcoin is most trustable at the moment, but with POW it is not that scalable and efficient in terms of power and hardware. So we will be needing an optimised solution if we want crypto to go mainstream. Offcourse Bitcoin ain't going anywhere, and although I am not a fortune teller but in future, I think people will be using it more like a store of value(because of its security) rather than using it as a transfer of value(transactional purposes as that would not be efficient as I have said)