That you apparently failed to recognize your inabilities and/or failed to practice sufficiently is hardly a reflection on the modern compound bow, which can kill quite effectively and humanely when used in the hands of a hunter that cares enough to be honest with himself about his personal limitations and effective range. Further your personal experiences with bows and deer is certainly no reflection on bow hunters as a whole.

As to your age and your stance on the crossbow, I am in concert with you. I think that the crossbow is an excellent choice for those that have impairments or ailments that create a disadvantage for them. Crossbows are welcome in my woods anytime. Who knows. In a number of years, this bow hunter may be looking at them out of necessity too.