They see you as subsentient. The only value they see in you is your reproductive ability. It doesn't matter that it will destroy you. All that matters to them is you have their children.
Ceremorphosis is sitting there knowing you will die giving birth to your rapist's child.
Just some ponderings from thinking about Alien and Expedition to the Barrier Peaks, I have been thinking about mindflayers a lot recently anyways. I feel like there are a lot of ways to take them but people very rarely take them anywhere beyond the default ways because IP laws stifle.