most of the people that are considering withrawing Thier investment within few years into Thier holding have probably not made any real  life investment into a tangeable asset. If you've purchased an asset like land that always appreciate in value, do you sell it out in the next three to four years even when someone offers to pay twice the amount you've spent in purchasing the land? Or do you invest into a business and becouse you've gained a short term profit above what you started the business with, you decide to sell the whole business and put the proceed of the money into another thing.it doesn't work that way. You already know that if within four years your land can appreciate up to a certain amount, that if you're are patient enough to wait longer then the reward would be better than being moved by whatever difference in price you've seen now.

Except Thier is a case of emergency or you want to sell out part of your profit and reinvest it into another promising  asset so as to get double section of investment, your holding should remain as either a backup of your reserve fund, savings for your retirement or a means to achieving a set long term goal.  It's necessary to understand that the money used in investing into Bitcoin if gathered together and used to start up a business or firm could possibly yield huge profit in the next ten year time putting all things into perspective but the advantage that investing into Bitcoin has over most other things is basically the fact that with a small amount of money you could start making your investment buying the amount of Satoshi you money can carry with the use of the DCA method without necessarily getting thousands of dollars at a time, just like the amount you need to get into real estate or to start most kind of investment.