This is one thing I never get and that is how is water that comes from the pipes that then goes down the drain and back into the pipes (to be re-filtered and put back into the water system) wasting water? It's not like we're throwing that water in some "never use again" bin, and it does get filtered and cleaned before being reused. The only thing you're wasting is money for paying for the amount of water you used.
How is that saving time? If you shoes are slip on sure, but you jeans and laces generally require both of your hands. Every time I've ever tried to do either of those tasks with one hand it's gone extremely poorly, it requires a lot of practice to do single handed (the kind of practice only people who have only one arm have patience for).