Incidentally, I assume that Bostrom cannot have read C S Lewis's fantasy horror novel 'That Hideous Strength' in which a human brain is (apparently) preserved by scientific means after being severed from the body. The chief scientist involved, Filostrato, envisages a future in which men will have developed beyond the need for a body. I won't spoil the plot with any more detail but the scenario that Lewis imagines is not pretty.
I'll tell Bostrom and the BBC something about 'The Future of Humanity'. Jesus Christ is returning, bringing His rewards and judgments with Him. Better be ready. Materialists mislead us about our past so they can mislead us about our future. We are going to meet our Maker and it might be, probably will be, much sooner than we think. Then we will answer for what we have done and what we have failed to do. Read Matthew's Gospel chapter 24-25, read the letter of Jude, read the book of Revelation.