Is 1 Thessalonians 4:17 the only verse that supports the rapture? Are there any verses in the Bible besides 1 Thessalonians 4:17 that support the doctrine of the rapture?
There's also Matthew 24:40-42


  Two men will be out in the field; one will be taken, and one will be left. Two women will be grinding at the mill; one will be taken, and one will be left. Therefore, stay awake! For you do not know on which day your Lord will come. 


and it's friend Luke 17:34-35


  I tell you, on that night there will be two people in one bed; one will be taken, the other left. And there will be two women grinding meal together; one will be taken, the other left.” 


so long as you leave off the next verse


  They said to him in reply, “Where, Lord?” He said to them, “Where the body is, there also the vultures will gather.”


Which rapture folks might be likely to do. 

It kind of leaves you thinking that the lucky one is the one who is left, not the one who was taken and eaten by a vulture. If this were pointing to a rapture, the one who was left would be the one eaten by a vulture.