I don't think people who are investing in Bitcoin doing a wrong thing some times I might not 100% accurate but it is possible that Bitcoins future will be much greater than today even it is struggling with its price at the moment but we need to understand that every investing asset has it own price variations in different time periods and Bitcoin have them too but the variation was much higher in the past couple of years that is why most people did panic selling to avoid further losses but it is clearly gaining its price back slowly so buyers who invest today might make huge profits in the future