Separate from the conflict and chaos, it's actually a pretty beautiful part of the world. They don't call it the Fertile Crescent for nothing. Also one of the Cradles of Civilization. The city of Jericho/Ariha is one of the oldest continually inhabited cities on earth, with archeological remains dating back around 11,000 years.
That land has a fascinating mix of history/archeology, cultures, ethnic groups, art and cuisine, etc. Also some of the most holy sites for several major world religions (hence it's known as The Holy Land, even if life there today is too often arguably and tragically not as "sacred" as the name would imply). Major holy sites in Judaism, Christianity, Islam and the Bahá'í Faith, as well as the Druze and Samaritan religions, are found there.
As for giving the land "back" to the descendants of the Ottomans – whose empire no longer exists – what would that entail? Modern-day Turkey/Türkiye takes control? Palestinians/anyone whose family has lived there for generations since Ottoman rule gets the land back?
Why not the British? Or the Romans/Byzantines? Or the Greeks/Macedonians (Alexander the Great also conquered it)? Or Egypt? Or the Persians (modern-day Iran)? Or Babylonians (Iraq)? Or the Assyrians (Syria)? Or the Canaanites (modern-day Lebanon, Syria, Jordan and Palestinians?)? Or the ancient Israelites (modern-day Jews)? Etc.
By "Christians", you mean the Christians (Arab, Greek, Syriac, Armenian, 1st-century Jewish converts?) who've lived there for many centuries (or some of their descendants who converted to other religions), or you mean the Crusaders (France & other European countries?)? Or Southern US Baptists/the Vatican??? 🤔
It's passed through quite a few hands. Clearly a lot of people want to live there.