The Lost Art of Flushing

I used to believe that one thing set us humans apart from animals...toilet flushing. But unless there are animals working on the 25th floor of my office, I see that I am mistaken. The question has plagued me for a while (approximately 1 year, since today is my anniversary), how hard is it to flush. It only takes one second, you can even use your foot.

Perhaps there are advantages to not flushing. Arguably, it saves time and energy, but beyond that? Perhaps people are just disgusting. I think this argument may, unfortunately, be a little more plausible. What would this world become if everyone just stopped flushing...I mean, besides dirty.