Back when I got certified to teach bowhunting safety courses, I was able to look at some accident statistics for NY state. (some years ago)
What I still remember is that of all the accidents hunting (including guns),a very highpercent were caused by people you hunt with. And not only that,most were caused by relatives. So not only is it the old dudes, but it's also people you hunt with. Actually the percentages are probably higher, now that I know more about how these things are supposed to be calculated.

And lastly, every single accident could have been avoided by 3 standard safety practices. ( always treat gun as loaded, keep muzzle pointed in safe direction, know what you are shooting at (ie not blindly into brush))

Obviously I don't need to tell you this David, but just thought it might be interesting for others. I was quite surprised at the time, thought more of it was from other hunters in the field you didn't know...

Note: I edited my percentages because I'm not certain of the exact numbers, it was 20 years ago...but it was still very surprising.Also I remember not seeing any treestand accident statistics like the other person said...