I gave squatting a try a few months back. You can do the same thing by grabbing two cinder blocks and positioning them on either side of the toilet with the seat up. It felt slightly easier to defecate, but I couldn't figure out how to use it with pants as easily as regular sitting; you need to get out of one leg, almost, for it to work. And taking off my pants every time I need to defecate is a pain in the ass.
For many people who on their own homes it would actually be feasible to build or install a pit toilet. I do not know of anyone in America who has done so.
The cider-block idea sounds unstable... but I haven't tried it. However, it seems that it should be fairly easy to train your body to go just before you take a shower, assuming you take showers on a predictable schedule, thus solving the undressing inconvenience.
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