Are you guys purposely being ignorant? Noah was preserved on the earth because he and his family were to repopulate the earth as soon as the flood was over. If Noah and his family were "BEAMED up" there would have been no one left on the earth to repopulate it. So your comparison is faulty.
The gathering of the church on the other hand, is in fulfillment of receiving a resurrected body like the Lord's, to become immortal and glorified and to be removed from his wrath. As Jesus said, "in the resurrection they are neither married nor are given in marriage, but become like the angels of heaven." Unlike Noah, the church does not have to remain on the earth to repopulate it.