If you're like me, then you had a grandmother who instilled in you the necessity of the words please and thank you. I remember her saying when I would ask for something, "what do you say?", and she would repeat the same question often when I received something and forgot to use the "magic" words please and thank you.
What I could not understand as a child, because really I was merely repeating out of obligation the words please and thank you, is that using please and thank you are signs of respect and care for the individual whom you are interacting with at that moment.
Whether it is the person making your coffee drink in the morning, the server or bartender, store clerk, friend, family member, child, or co-worker taking the time to ask with please and receive with thank you creates a more caring and respectful atmosphere.
So please give it a try and I thank you.