I had a good book titled 'Humanure' that stated that the sitting posture is quite unnatural and drop toilets or rather throne-less were better for us.

At university (UK) I couldn't work out why some toilets had shit all over them, like people just evacuated all over the seats. I thought: what animals/dirty tricksters! After reading that book I realised that it was non-uk students who were struggling with the UK style toilets.

Some suggest standing on the throne as a compromise, but it's a bit precarious, and it's not nice if you miss the target.

I prefer squat toilets myself, as long as they are kept clean.

Yeah, that drawback can be seen as a JUST motivation for not taking your time in the toilet always. Even 5 minutes saved one time, is equal to 10-15 minutes everyday. 70-100 minutes a week and around 60-90 hours a year to put that into perspective.