Heaven would be good

[Angrboda]

Why? What is sacrosanct about humanity per se? I can't see how something could be a crime if no one is suffering.

Are you serious? Take away the capacity to feel and react in a way fundamental to the species merely to make eternity endurable; what are you rewarding? A crime against nature is still a crime, however much it may be rationalised.

I'll put it another way. Any version of me that has to be altered to remove a fundamental part of my nature against my will merely to conform is not a version of me that I would recognise as myself; nor would I wish it to be. And neither would I wish such an existence on my worst enemy.

Maybe if each change was really small, you'd get over it. Like alcohol..... you drink a little bit... and then a little more... and pretty soon you're smashed.