Believers are raptured upon Christ’s return so that we are not destroyed along with the evil ones. There’s very much a purpose of being raptured, just not in a secret way, 7 yrs before Christ’s return.
Going through the Tribulation would ensure that believers are going to be destroyed along with the evil ones between the judgments of God and the mark of the beast thing.
Unless you hold that God's judgments are going to hit only unbelievers but I don't see anything in Scripture that supports that.
Besides, I don't see anything indicating the Rapture is going to be secret. You don't think people are not going to notice millions of people missing?