Your questions are the very same ones that I have always stumped into precisely. I know there has to be an explanation that I'm missing, but I would love to hear it and understand it.
Indeed if the Holy Spirit is holding back anti-christ now, how do believers come to Christ after the rapture, if people can only be saved when the Holy Spirit draws them?
This is a subject I have chosen for years not to look into too deeply, because of the confusion I reach when I do, and yet I realize it bears having some good explanations.
No one would like ot be out of this nasty world along with my loved ones more than I, but I rather trust in Him and live in Him no matter what He's planned to do, and trust Him for the strength I naturally lack.