i might not totally agree with you that while investing in bitcoin you should just set up a plan of accumulating 2 bitcoin and use the whole of your life in getting to that planned figure.
Yeah it is of the nature of every investors to dream big about their future accomplishment, so setting a reasonable target is good way to start the process but not every target is encouraged, so actually I would say that having a set target of 2 Bitcoin to achieve in all of his life does not sound like a target because the conviction will be very low and as the time goes you will start losing interest because of the belief that you still have a good number of years ahead of you to meet up and from such mindset other things will come in play and occupy your mind from thinking about your investment, meanwhile as we normally talk about few years targets is better because it gives us the discipline that whatever thing we do we have something very important to reach out and that idea will now be installed on our head. 