The bible speaks of 3 comings of God.
1) a physical coming, manifestation of God. The 1st advent and the 2nd advent.
2) a spiritual coming, upon salvation. If anyone opens the door, I will come and dine with Him (Rev. 3:20)
3) a judgment coming, in which He comes to destroy a city or nation. Also know as the day of the Lord.
You seem to have a hard time grasping the 3rd, and many others. So I'm going to post some scriptures that give us an Idea of God coming. My question to you, Does God clearly say He is coming or will come? and did God actual make a visible appearance?
Isaiah 19:1
The Burden against Egypt.
Behold, the Lord rides on a swift cloud.
And will come into Egypt;...
Psalm 18:9
He bowed the heavens also and came down
With darkness under His feet.
Isaiah 34:5
"For My sword shall be bathed in heaved;
Indeed it shall come down on Edom,..."
Micah 1:1-2
The word of the Lord that came to Micah of Moresheth in the days of Jotham, Ahaz and Hezekiah, kings of Judah, which he saw concerning Samaria and Jerusalem. 2. Hear, all you peoples! Listen, O earth, and all that is in it! Let the Lord God be a witness against you, The Lord from His holy temple. 3. For behold, the Lord is coming out of His place; He will come down and tread on the high places of the earth.
Isaiah 26:21
For behold,the Lord comes out of His place to punish the inhabitants of the earth for their iniquity;...
Revelation 2:16
"Repent, or else I will come to you quickly and will fight against them with the sword of My mouth..." (regarding to the things of the Pergamos Church, false doctrine).
Those who interpret most of Matt. 24 as already past, as the destruction of Jerusalem, are simply recognizing the genre of prophesy of destruction, decreation language, and applying it here as well. We are simply interpreting the Bible with the bible!