When we say please we acknowledge our need, our lack. When we say please we humble ourselves before someone to acknowledge we can't or don't want to do something without them.
I notice folks neglecting please and I see our society more and more disconnected from one another. I submit that simple courtesies are more important
"Get me some water?"
"Please get me some water?"
When someone says please they offer something in return for your services. They offer the acknowledgement that they need you. They offer their humility. They are essentially realizing that they are not entitled to your service, but privileged that you render it. When they say please they are actually valuing you. We need to cultivate values--especially of one another!
As the quote from Ephesians so eloquently states we are to "bear with one another, maintaining the unity of the Spirit in the bond of love." Think about it a bit. Try courtesy on a little more. Say please and thank you. Slow down and open a door for someone else or let them merge on the freeway. Do it in the Spirit of love with a smile. You will be amazed how good you feel, how much love you gather from others and how much peace there will be in your soul.