I give you a cozy chair and you are now going to watch the beginning of earth til today with all your senses. You won’t age, everything freezes. But once you reach this minute you will get a million dollars.
All you have to do is watch earth form from nothing to how it is now in this minute and then you will come down to earth with a million dollars and nothing changed.
Yes or no? You will see things nobody has ever seen and you can watch the dinos if you get to that point after a few million years. I will give you a chair and binoculars
We can also change your thought experiment to help people conceptualise the “billion” part. Instead of a lump sum after a billion years, let’s just take the original million and divide it so you receive the same amount for every year you complete. Does receiving a hundredth of a cent ($0.001) for every year you sit in said room sound like a very good deal?
Even with hundreds of billions of dollars, it sounds like an insanely bad deal. It doesn’t even cover a yearly salary, and money would be completely unusable for 99.99% of that time lol