Whe Word of Wisdom- How to answer hard questions

A lot of times people probably ask you "Why do Mormons have so many rules?" "Why can't you drink coffee?" "What's wrong with wine?".  What do you answer to these questions? Often it's very difficult because you know that the concept is so different to these people that ask you.
So what can you answer?
I really love how lds.org defines the Word of Wisdom concisely and adequately:

            The Word of Wisdom is a law of health revealed by the Lord for the physical and spiritual benefit of His children. On February 27, 1833, as recorded in section 89 of the Doctrine and Covenants, the Lord revealed which foods are good for us to eat and which substances are not good for the human body. He also promised health, protection, knowledge, and wisdom to those who obey the Word of Wisdom. 

Now we need to know how to put this into our own words. Make sure you convey these key points:

• It's called the Word of Wisdom
• It's a law of health
• It's revelation from God
• It tells what things are good and bad for our bodies
• We are promised blessings if we keep this commandment (health, protection, knowledge, wisdom)

But, even with telling these key points, the Spirit will be in your conversation the most when you bear your testimony of the Word of Wisdom's truthfulness.

I know that when I obey the Word of Wisdom, I am blessed with the blessings that that the Lord promises to give me. I truly can see these blessings in my life.

If you would like to read the Word of Wisdom, it's in Doctrine and Covenants 89:5-21.  You can click here to read it.

If you would like to learn more about the Word of Wisdom, click here.