I was about 14. Am 57 now. No adult in my family hunted seriously and it was just me and my cousin who started deer hunting. We had to beg some adult to drive us to the woods the 1st couple of years because we were too young to drive and back then you had to go somewhere else to deer hunt because deer numbers were so low in most of the state. I honestly do not remember my 1st deer either because of the chaotic nature of those early hunts. I do know that I was 28 when I finally got a buck decent enough to have it mounted and by today's standards it's laughable. It was very memorable however because I got it with my 460 Weatherby and handloads with the Barnes original style bullet in 300 grain weight and 120 grains of IMR 4350 for somewhere around 2,900 ft sec.
I was 10 when I first started and will be 38 soon. I believe most people from that time will be around that age because of hunter safety requirements at the time. My daughter started when she was 9 and is now 10 and has killed 3 deer already. It is funny to me how the times have changed. They did not have much gear for hunters when I first started out. Now I think she has better stuff than I do.
My dad carried me deer hunting when I was around 11. Killed my first deer, a doe, when I was 13. Then killed my first buck at 15. First buck has been my largest so far. I'm 45 now. First buck is my avatar image.
About 37. I went on one hunt as a kid about age 12-14, up in a tree with no communication with my dad who was hunting a mile away...froze to the bone. Just had to wait for my dad to come get me, saw nothing probably cause I was shaking so bad - guess that experience was in part why I waited so long. One thing that helped convince me in my adult years was having 3 kids - suddenly, the meat my dad provided might not be enough......