What do you think about Raymond Kurzweil's visions?

Raymond Kurzweil says that in 2030, people's biological life spans will be longer, and he is very insistent on this. Most of what he says has come true. A friend of mine who studies at MIT says that they will do this to make people work longer, and then they will transfer the brain to the machine and realize the project of being completely immortal and using the human body as an energy source, and even some famous names and high-ranking people have extended their lives, but they have technologies that they hide from us.
What do you think about Raymond Kurzweil's visions?
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