Looking for a book

Hello there,

I am looking for a book/story I read 2 decades ago. I suspect it was an Asimov one, but not sure.

The book is about a young human born in a scientific refuge where humans are hiding from an atomic wasteland. They chose to just enjoy life, modifying themselves so much that they ended up with blue skin, no reproductive organs, and a constant state of being high on dopamine/drugs.

The protagonist is a child that, for some error, was born like a "normal" human and not a "upgraded" one, and is bored to its bones.

Anyone knows the title? Thankyou