I do not know about the rest of you, but I read many things that must come to pass prior to start counting those of a certain generation.
Matthew 24:5 For many shall come in my name, saying, I am Christ; and shall deceive many.
This has been done and is continuing.
Matthew 24:6-8 And ye shall hear of wars and rumours of wars: see that ye be not troubled: for all these things must come to pass, but the end is not yet.
7 For nation shall rise against nation, and kingdom against kingdom: and there shall be famines, and pestilences, and earthquakes, in divers places.
8 All these are the beginning of sorrows.
An ever present event in our world.
Matthew 24:9 Then shall they deliver you up to be afflicted, and shall kill you: and ye shall be hated of all nations for my name's sake.
What is Jesus talking about? Matthew 24:3 says that as Jesus sat upon the mount of Olives, the disciples came unto him privately, saying, Tell us, when shall these things be? and what shall be the sign of thy coming, and of the end of the world?
Matthew 24:13 But he that shall endure unto the end, the same shall be saved.
What end is being talked of here? We read back in Verse 3 that Jesus was asked of the end of the world (Age).
Matthew 24:14 And this gospel of the kingdom shall be preached in all the world for a witness unto all nations; and then shall the end come.
Has all nations (Not individuals) been preached to yet?
Matthew 24:15 When ye therefore shall see the abomination of desolation, spoken of by Daniel the prophet, stand in the holy place, (whoso readeth, let him understand:)
This event will occur in the middle of the tribulation.
Matthew 24:16-22 These next verses certainly describe great tribulation. Revelation 3:10 calls that time "The hour of temptation, which shall come upon all the world, to try them that dwell upon the earth."
16 Then let them which be in Judaea flee into the mountains:
17 Let him which is on the housetop not come down to take any thing out of his house:
18 Neither let him which is in the field return back to take his clothes.
19 And woe unto them that are with child, and to them that give suck in those days!
20 But pray ye that your flight be not in the winter, neither on the sabbath day:
21 For then shall be great tribulation, such as was not since the beginning of the world to this time, no, nor ever shall be.
22 And except those days should be shortened, there should no flesh be saved: but for the elect's sake those days shall be shortened.
Just read on through those verses and find our text context of who that generation pertains to and when it begins. Hopefully present Christians will be in heaven prior to most of these things ever coming to pass.
Matthew 24:34 Verily I say unto you, This generation shall not pass, till all these things be fulfilled.