Taking a number two without the use of a footstool to get into a more natural squatting position. I look forward to the ritual every morning and usually achieve 'poophoria'.
The most naturally-ergonomic toilet is actually the seatless "turkish" hole. Unfortunately it's often not the easiest to use in a hygienic manner, and it requires a lot of space. I wish someone would invest in evolving that model into something better.
> old people have problems squatting.
They shouldn't be required to, but everyone else should have the option to preserve their bodies better.