I believe He will come when nobody is expecting him, like the Bible says. This ties in perfectly with Jewish messianic beliefs - they say that when the Messiah comes NOBODY in the world will question him - either because the world has become perfected and everybody has understanding of the prophecy and believes it to be true, or because the world has become so evil that not one person in the world cares if he is the Messiah.
I don’t believe He will return in our lifetimes. Jesus will return after there are no Christians left in the world, which could be thousands of years from now. Only then will there be nobody expecting him.
Or the Rapture of the True Church....
That is how all the Christians will be removed.