When you look at the deeper meaning of Namaste (deeper than the normal "hello" and "goodbye"), it reminds you how nice the gesture truly is:
In, Sanskrit "namah" means "bow, obeisance, reverential salutation, adoration" and "te" means "you". A literal translation of namah te is thus "reverential salutation to you." It is commonly accompanied by a slight bow made with the hands pressed together, palms touching, in front of the chest.
In a religious context this word can be taken to mean any of these:
The Spirit in me meets the same Spirit in you.
I greet that place where you and I are one.
I salute the Light of God in you.
I bow to the divine in you.
I recognize that within each of us is a place where Divinity dwells, and when we are in that place, we are One.
My higher energy salutes your higher energy.
In the end, the gesture recognizes the equality of all, and pays honor to the sacredness and interconnection of all, as well as to the source of that interconnection.
http://en.wikipedia.org/wiki/Namaste