I am somewhat old school, or at least somewhat old, and I always wear actual hiking boots, although I do frequently take flip-flops for a break around the campsite when I overnight. I totally get the temptation to wear sneakers, and I have seen plenty of people do so with success. However, the thought of rolling my ankle as I make my way through the 23rd switchback keeps me in check. Besides, I really love that feeling of finally pulling off my boots. Just my two cents.