If Jesus' purpose for the Rapture is to get His redeemed off the scene before He sends judgment, then it would make no sense to leave part of them behind.
After the Rapture occurs, we will have the Bema judgment, and the Marriage Supper of the Lamb. Those things can't happen with only part of the Church in Heaven.
I believe that what Paul is teaching in 1 Thessalonians is that we all go, it's just that the dead will go first. And all of this happens in less than a second.
What an awesome, powerful Savior we have!
I hope so Giovanna!
That is why the LORD says keep reding and encouraging one another!