I understand that your brain isn't designed to last forever either and will eventually give out so what's the point?
My wife's grandmother is still hanging on at 96 and is completely batshit. She's stated that she enjoys this as everything is always new and interesting even if she heard it 30 minutes ago.
Most people die long before their brain gives out. It could extend your life 20+ years so it's definitely worth considering. It also means the only thing we have to worry about is your brain, not a dozen other organs which are now easily expendable.
My wife's grandmother is still hanging on at 96 and is completely batshit. She's stated that she enjoys this as everything is always new and interesting even if she heard it 30 minutes ago.