Have you ever noticed...the lightsaber is a reflection of the character that holds it..?
Obi Wan Takes Anakin's lightsaber and the end of the duel and later gives it to Luke..

http://www.twhgrafx.com/blog/archives/lightsaber-4up.jpg

Anakin Skywalker, Qui Gon Jinn, Yoda, and Obi Wan Kenobi have plain jane no frills lightsabers..a reflection of the Jedi Way..Stewards, Trustees..

Mace Windu, Maul, Dooku, and Sidious have stylish lightsabers.. a reflection of Sith Way.. Self Serving, assassins,

The lightsaber... This weapon is your life! They way they hold and wield the saber reflects how their inner selfs truly are..!

http://www.starwars.com/episode-iii/bts/me3/5.html

Anyone notice that? It is kind of like the guy who drives a exotic car? What is he compensating for/
THX,
CE