Holding hands may seem like an innocent gesture, but they show more than a simple interlocking of fingers.

Your hands are one of the most essential parts of your body:

You build with them, feed with them, hold with them, touch with them; 

They are the tools of the human body.

To link yourself to another being, to momentarily entwine your life to another's, to promise, for a moment, that you need not face the world alone. 

More simple, more aesthetically naive than other forms of affection.