The Middle East has been in a state of perpetual war for millennia. That's not "fine", but trying to bring long term peace there is utterly futile. When a problem has no solution then it's not really a problem, just a fact to be accepted.
I would actually argue it's strictly worse, because we have gotten terribly effective weapons in the last century.
No one in the ME was killing each other as effectively as they are now. That's a way things are demonstrably worse than "there was war a millenia ago."
I also don't think it's fair to say that the ME has been in a "perpetual war for millenia." Was the ME at war during the crusades? Or was Europe conducting Sieges on them.
The Middle East was at war when the Assyrian Empire conquered its neighbors in the 14th century BC. The Middle East was at war when the Achaemenid Empire conquered its neighbors in the 5th century BC. The Middle East was at war when Jewish tribes rebelled against the Roman Empire in the 1st century AD. The Middle East was at war when the Umayyad Caliphate expanded in the 8th century AD. The Middle East was at war when the Ottomans captured Turkey in the 15th century AD. And so on. Some of those groups managed to commit horrific genocides despite having only primitive weapons. This is all terrible but nothing has really changed and unfortunately there is no realistic prospect of breaking the cycle of violence.
As for outside invasions, the same thing has happened to almost every area of the world. Often multiple times. The Middle East is hardly unique in that regard.