I am not saying that the prayers denigrate Jesus’ sacrifice, just that the belief, the Belief, that somehow, having Jesus as my Savior will NOT get me to heaven, that He is not ‘purging’ enough, that there is no way He can clean us enough, we still neeed to have a stopping point.
THAT is what takes away from Him.
You confuse the destination with the journey. It's like saying "since I believe in air travel, there is no need for air planes." Because Christ is your savior, you will be purified. Not in spite of it. You are in no way, shape or form suitable for Heaven as you are right now. Before you can enter Heaven, you must be made pure. That's what Purgatory is, the cleansing of the soul before entering into the Lord's Presence. The wiping of the feet before entering the room.