It is holy to them because that is their home country
Israel.
Israel is the Jewish homeland. It is where the Jews originated from.
Israel is a holy country because it has the western wall which is the last renaming wall of the holy temple which is holy for Jews, Christians and Muslims.
Jerusalem
When Joshua brought the Jews into the Holy land (3284 years ago), its name changed from Canaan to Israel.
The western wall is the most holy thing for the Jews ( and even for some chrostens because the western wall is a part of the Jewish temple ) . Because the western wall Jerusalem is holy for the Jews, this is the most holy city for the Jews .
Jews believe that Jerusalem, Israel is their holiest city. Muslims have three holy cities: Mecca, Medina, and Jerusalem.
Israel/Palestine.
Israel/Palestine
Holy Land.
sumin ad because the former palestien was concider the holy land by the inhabitents, so they kicked out the Jews
Jews do not fly for free to Israel from the perspective of the airline companies. There are some Rabbis who philanthropically grant free trips to Jews to visit Israel. However, this is a private endeavor.If the Christians wanted to put together similar associations or subsidies for Christians to visit Israel, that is entirely their prerogative.