I've done a number of guided trips... all on water. I'm perfectly capable of setting up camp, and I can paddle my canoe but when I'm in an unfamiliar place, I don't want to trust my own whits to saving myself on water. I've taken guided trips and rafted and canoed and kayaked in a number of places, and they were really nice trips. I
never did it for the opportunity to meet new people. I did it for the chance to get to someplace I'd not be able to get to if left to my own devices. I was always afraid that I'd get with a group that was more concerned about swimming and water fights, than seeing yellow warblers, or listening to boulders rumble in the river. There was one trip that had a couple of little girls who were spending more time spraying people with super-soakers than was appreciated. On about the third day, a guide pushed them into the river. There were many tears, and some parents were quietly offended, but things were definitely more subdued after that. I'm a little ashamed to admit that was really the high point of that trip. It makes me smile even now. I never, ever paid anywhere near that much for a guided trip. I did a rafting trip on the Kongakut, on the North Slope, which was my most expensive trip. It was under $4,000 for about two weeks. If I had needed to set everything up, I'd still wonder what it looked like up there. I never got to pick the campsite, though I liked where we stayed. I did get input into where hikes would go, though it was never my choice, solely. The food--not cooked by me--was wonderful. I guarantee that if I had cooked things myself, it wouldn't have been wonderful. I regret that I don't know how to cook anything that good, even at home. I don't know that I ever stayed awake long enough to enjoy dessert around the fire, but it was always quiet enough that I could sleep while others sat around the fire. They were enjoyable trips that got me to places I wouldn't have made it to, otherwise. I have no regrets about those trips.
Safety on water is my concern. I have self-organized a couple of little canoe trips into the Boundary Waters, and the Tetons, and hike alone most anyplace that I don't worry about snakes. I just got a little packraft to play with in Yellowstone this year, and dream daily about bobbing on some backcountry lakes. Last year, I hiked into Heart Lake, and there was a canoe and a couple of packrafts, and I was *so* jealous. This year, it's gonna be me out there! Well, fairly close to shore. It probably seems inconsistent that I am not worried about water safety in Yellowstone, but was in other places, but here I know prevailing winds, and have a good sense of where I can put in that if something happens, I should be able to land and wander back to camp, if need be.
I know I could take water safety and rescue courses, but the reality is that I still wouldn't do those trips. I will give up some of the autonomy for the ability to get to places that I want to get to, and see and sense things that I otherwise wouldn't be able to experience. And like a stray, if you feed me, I'll come back.

I certainly understand all of your comments, but you asked for thoughts. I'd never go on a guided hiking trip.