Based on their commitment to keep to their decision it makes me ask myself how do this set of person go about their daily lives when they know they can afford those things they see around?
Determination is the soul of every investor. This set of persons is determined to forgo pleasure because they know that the future will be better if they invest wisely today. I think that the most important needs are food, shelter, clothing, education and other basic things. For you to keep investing, there is a need to have self-control which makes one focus less on wants and more on investment.
Lastly have anyone come across any individual who will deny his comfort for Bitcoin and what do you think are their motivations?
One does not need to suffer or die because you want to accumulate Bitcoin. You have to take care of yourself and your family first before thinking of investing because there are things that are more important than making money. Investing shouldn't deprive you of the good things in life. I think we should have a budget that will help us in planning how we spend and invest our income. Our priority should be our basic needs and any remaining funds can be invested in Bitcoin. Their motivation could be to create a financially stable future for themselves and their family members.