What Mathilda said. If I have a plank of wood and reduce it to sawdust, it is still wood, but no longer a plank - the pattern is broken. Similarly, what makes you 'you' isn't just matter and energy, it is a particular configuration of matter and energy. When you die and that particular configuration no longer exists, neither do you.
Boru
Boru
‘I can’t be having with this.’ - Esmeralda Weatherwax