try adding a new row only for comparison's sake and in that row include a what if scenario when you only invested all your money in bitcoin and never bothered with the notion of "portfolio" and then try calculating how much money you could have had in you did that. it can be an interesting factor specially in the long run.
yes, of course, its necessary to investigate and compare such kind of things
Well you cannot ignore the importance of management in business and when it comes to portfolio management, it is probably inevitable to pay attention to the portfolio management and this is one among many instruments thorough which you can make money.