Ah, yes. I remember being young, dumb, and full of... well, you know the rest. 75 now and in overall pretty good health. But I have moderated my activities more towards comfort and safety.
I can't recall the last time I climbed a tree. On my own property, over time, I have built shooting houses. If I'm on other property, I use pop-up ground blinds. I can stay warm, dry, and comfortable. Best of all - no climbing, greatly reducing the dangers of falling and the exertion of climbing. And for icing on the cake - I kill plenty of deer, partly because by being comfortable I tend to hunt longer.