People are still buying bitcoin because they know that they can earn from it. Even though bitcoin price nowadays is constantly changing, we all know that sooner or later, we can reap what we have sow. So that is why people are still buying bitcoin until now.
Anyone who knows about bitocins, he wouldnt be stopped to use bitocins. They are best source of income so why not someone use it for enhancing and uplifting the lives there are currently living. There are chances where people from different backgrounds of education come into this world but they dont know how to operate these and earn money. Learning would be enough for them.