There are many seemingly insurmountable problems that are simple to fix… It’s just not going to be easy. There are always secret motives that underlay every one of these simple but not easy problems that are base in nature: greed, avarice, lust, narcissism, spite & schadenfreude, and a host of lesser bad intentions. Greed is the most common but people won’t admit that’s what’s ultimately motivating them; they always come up with a fig leaf excuse explaining why they’re acting illogically, but you can bet if you could read their minds, the answer to why a simple solution is so difficult to implement is because the person benefits from the problem continuing.
Even things that on the surface seem like they might be helping the situation, maybe they even are, like altruism, charity & benevolence, but are actually benefiting those performing them, usually in the form of feeling moral superiority, relief of guilt, even masochism, which is rarely verbally recognized but is commonly the real reason behind pursing otherwise irrational goals that actually harm the person. For big issues like marriage, divorce, abortion, inflation, the conflict in the Middle East, and even the threat of total societal collapse, there are whole groups of people benefiting from the chaos that exists now, or are simply perverse, the worst of the bad motivations. When perversity is involved, nothing is easy even if it is simple.