Because Bitcoin investment is not done under compelling circumstances. There are basic needs that must be prioritized apart from investment needs. Therefore, whoever is consistent with their financial management will have maximum results.
Of course we cannot force ourselves to invest in Bitcoin, because it takes a long time to be able to get a profit from the investment and if we still force ourselves to invest, of course when we experience a need that we didn't expect, of course we have to sell it in the current situation if the situation is necessary. Of course we can still make a profit and if it is the other way around, of course we will bear the losses from the investment.
Perhaps your target as a beginner in times of Bitcoin investment shouldn't be for the profits for now instead the main focus should be on how well you can strategize yourself in other to have a good amount of Bitcoin in your portfolio because in every successful investors there are planning, sacrifices and risk he or she took in other to be were he is now and also they are not Propelled by a little profits they could make from there Bitcoin investment at the long run but instead they think about the future of there investment and the likely outcome of it.
So however having a proper planning on Bitcoin investment I see no reason why other needs will pulled your Bitcoin investment down although sometimes there could be some unforseen circumstances but however there should be some reservations kept for those purposes while your investment keeps running.