If you do not to rely on the mined coins to make a living, it is better to just hold the coins for the long term.
I think so. The bitcoin price will rise in the long term, at least in the next few decades. So it is better to save.
Few decade is a long wait and that is only good for the long time investor as they have a lot of money so it is fine with them if there investment will be stock for a long period of time. I believe that is the best way to do to make good profit in the future but not everyone can wait.