Explaining bitcoin to someone who has no interest in it is like trying to explain to your mother in law that she should remove windows and switch to linux. From their perspective it just seems unneccesarry and overcomplicated.
Unnecessary and overcomplicated? Compared to what? Have you ever taken out a mortgage? Ever tried to send funds overseas? Ever wondered how entire cities are built by the people who run the money?
Does your mother in law know what fractional reserve banking is? A bank run? Can they explain what happened in the 2008 financial crisis? No? They why would they need to know how Bitcoin works beyond just "trust me, it does"?