Things can transform quickly. The 1c Jews did not expect the Messiah to come in their lifetimes either (John 1:46). But I agree, the reality is that the Christians leave the Holy Land, whereas they are supposed to gather in it. On the other hand, no one said that the Second Coming of Christ is to happen any time soon.
That’s at least 7 years off . . . at the end of the Great 7 year Tribulation.
Lots of people have said it’s going to be relatively soon.