I am a 77 year old and I purchased this ladder December 2015 to get on our church roof and to do maintenance inside on items attached to the higher than normal walls. I have two of this style ladder at my home that I have used for many years. I really love this style ladder for its compactness and its strength, but there are a couple of things I do not like at all, and they are 1, how difficult it is to operate the thumb "slide buttons" to lower the ladder especially when you get closer to the bottom and still keep your hands away from the "pinch (crush) point between the rungs. ( I have found that if I lay the ladder down on the ground and put one end up against the wall or curb or ?it is much easier and safer) the main thing I do not like is the "plastic or ?" feet will grip ok on a concrete or other rough surfaces, but has almost zero grip on smoothe floors, (finished concrete, laminate, tile, hard wood,) and etc. I unfortunatly have personal experience with this as I right now am spending about 23 1/2 hours a day in my recliner because I am not allowed to put any weight on my fractured heel for 8 to 12 weeks or longer due to the ladder sliding out from under me while using it on a rough looking laminate floor and leaning against a painted sheet rock wall. I am now trying to find " rubber style" feet to replace ( or cover) the existing plastic feet before one of the other members of my church has the same thing happen to them.