They die of old age because nobody sees them. Does that make more sense?
The last buck I shot was a 236lb eight-pointer with a 23 inch spread. Rattled it in and shot it from the ground with a bow. I think I know how to hunt. Plus, I live 2.5 hours from my hunting land and can only get up there once a month in the off-season. And the times I am up, it's usually with the family so I'm not off in the woods.
With all that being said, I spent all my time hunting with my son, guiding him from 6 years old to now 12 years old and he has shot 7 deer by my side in those years.
I am not a bad hunter. I hunt in an area that is vast and overgrown and hunting is very tough there.