Death is the end of life. Transhumanists seek to challenge what is often phrased as an inevitability through advocating the research into emerging technologies.
Technically speaking, the state of 'being dead' cannot be intrinsically bad because it is is experientially null.
However, the process of dying can be intrinsically bad because of pain, suffering etc and is typically extrinsically bad too via loss of knowledge, suffering of loved ones and so forth.
- Here's how you're probably going to die - in a stunning visualisation
- Death on Wikipedia
- Death and taxes (idiom) on Wikipedia