Best case scenario you can do what you want and deal with whatever urge you have at your pace. Worst case scenario you don't have agency, and just stay stuck suffering instead of dying. Personally I'd take the chance.
What "literally" means in this case? Am I completely certain that I'll be stuck on the trolley for eternity? I would think that I'm having a psychotic break and delay my decision.
But on the other hand, I might be so curious about what in the heck happened in the world outside - the world that led to this universe where it will be impossible for me to die for eternity, and somehow I know this with absolute 100% certainty - that I still opt out.
The "you have solved philosophy" message at the end of the game is very far from the truth.
50 more years to live? Okay. 50+? Kill me immediately!