Time goes..

met my ailing grandfather today. Not much is left of him, i guess. And it was very painful for me  to sit beside him, see him in a trance, maybe unable to distinguish the real world. He is very old. He is in pain and yes i guess that is old age. This is bad. To be around for so long is like a punishment, maybe punishment from the higher power. Why all this happens to such a good man? I mean, think it scientifically, he will be there for, i don't know how many days, but he will be in pain. Pain for the last of his days. What happens actually when we age? Our livers die? or do our brain deteriorates? As we age, our skin goes dull, our face distorts?? what does actually happens? We studied, right, mutation in drosophila, leads to its different size, different texture and colour. So is mutation in our cells one of the mysterious cause behind that? Might me. Or how?

Why can't we revive our cells as we grow? I also know that those who smoke, their skin dies away faster . This is ofcourse for the radicals of oxygen and carbon dioxide produced as we inhale in. But its better to die earlier than wait for 80 long years and we disgruntle our own system slowly.But i am not writing and debating about aging.  I just saw my grandfather there, lying on his bed, he can't even open his eyes properly, and he speech is a blur. How that that happen? He was so healthy. I mean, its not actually right to live for such a long time.