[kotharia]

Part of the reason may related to the Dunning-Kruger effect - the people who have less skill and experience in a field literally lack the skills to be aware of their level of competence. "Why can't you just ...?" is probably something the competent have already considered, but to the neophyte it seems like a new inspiration (and they don't have the depth of understanding to see the limitations). Questions like: Why don't you make it cheaper for people to live by enforcing rent controls? Why don't you motivate people by giving monetary rewards/punishments? are often asked by people who don't understand the flow-on effects ("unintended consequences") that their proposed easy solutions to complex problems might have. See also: https://en.wikipedia.org/wiki/G._K._Chesterton#Chesterton's_...