Why cant the Middle East just chill out?

I didn't used to understand foreign involvement in wars, like the whole America-Vietnam shenanigans. But I can see why after watching this Israeli Palestine Conflict since birth.

But now it's like watching two children fighting over who's sandcastles can be built in the sandbox. And what do we do if children can't learn to share? You take away everything and no one is happy.

So is that what this is going to come to? Do adults need to intervene to quell the infants?