I've been shaving my legs, chest, armpits and "other areas" for about three years now. I began shaving my arms just a few months ago during the summer. So, now I'm hair-free from the neck down. (BTW: Yes I wear shorts in summer, and short sleeves pretty much year-round. And, no I have never heard a negative comment while out and about. When friends and family ask about it, I just tell them I like the way it looks and feels.)
I was having to shave about three times a week, and as early as the day after shaving I could see stubble on my arms. I also dealt with razor rash/ingrown hairs on my arms and bikini area. I found myself getting self-conscious and wearing jackets or sweaters at times. Not anymore. My hair is growing back much finer, and I only need to touch up 1 or 2 times a week. The razor rash and ingrown hairs are almost all gone and the redness is fading.
It hurt the first time I used it, but nowhere near as bad as I imagined. Now, after about 3 weeks of using it, it's pain-free. My wife loves that my legs don't get stubbly and scratchy anymore--makes for better cuddling. I love how easy it is to maintain the look and feel I want. It works great on legs, chest, arms, armpits, bikini area. Just DON'T use it on your more sensitive skin "down there."
It's definitely worth the investment if you like to stay nice and smooth. In the long run it will pay for itself with money saved on shaving products.