This has always been the case and that's more reason why these set of peope should invest and still look for ways to improve their source of income if actually they want to make it to the future without possibly thinking that withdrawing their investment is an alternative to solving whatever financial problem they may have, one can only want to withdraw his or her Bitcoin investment when he or she sees Bitcoin investment as an investment that you can come in and want to withdraw tomorrow when there's a bit price increase, another reason why these set of persons you mentioned may want to withdraw is that they arent having long-term in their mind before starting up the investment in the first place, some person have series of excuses to withdraw their Bitcoin asset but my questions is, are these excuses worth it, is just like someone starting a journey thats very much beneficial to him at the end but refused to make it to that point.

There are poor people that has a futuristic mindset that strive to make that their portfolio keeps increasing no matter how little it is without thinking of withdrawing their BTC investment anytime soon, I think that these an individual thing and what they have in mind before investing.
Some people are bent on being too quick to decision because of their lack of panning they feel that any available source they can lay their hands on to solved their immediate problem is good to not minding the potentials of such assets in the future, being tempted as you said is normal for humans being involved in this investment but thinking twice before implementing such decision is what makes you a good strategists and a deciplinarian, no matter leta adhere to the mindset of consistent acumulation and hodling for a long-term.