Why would anyone want to become a Faceless Man?

Potential Spoilers Below

Initially when I read the books I associated the Gray Men in TWOT with the shadow assassin’s that Melisandre gave birth to but a more correct assessment would be the Faceless Men of Braavos.

A Gray Man slipping by an Aiel guard, unnoticed

Jaqen H'ghar (faceless man)

Braavos

“Gray Men are primarily men, though there are occasionally women in their number, and even in the War of the Shadow they had no real use beyond assassination, so far as is known today. It is unknown what promises these people have been given by the Dark Lord to induce them to give up their souls, though the number discovered suggests that the motivation must have been extremely powerful.”

A representation of the Dark One breaking free from his prison

Artist rendition of the Fist of the First Men
Looks like the Dark One breaking free doesn't it?

“Men, both male and female, were serving the Forsaken, but Lanfear had an antipathy toward them and did not employ them. Only Gray Men and Myrddraal did not dream, according to Lanfear.”

The 13 Forsaken

 

The Faceless Men train in the House of Black and White.  Mix black and white and you come up with gray.  The order seems ridiculous on the surface because what do you really get out of it to join up.  You get some cool fighting and killing skills but you can’t tell anyone about it and you give up who you are to boot.  Even the words that they all say “Valar Morghulis”, translate to “all men must die” is absurd as a saying of sorts. They aren’t needed for what is going to happen naturally anyway.  OK some people pay them to take someone out but what happens to the money.  You don’t buy any cool stuff for the clubhouse; then why take money for payment to begin with?  Basically what is their purpose?  Pretty much the same thinking in becoming a Gray Man in TWOT.  The Gray Men give up their souls and the Faceless Men give up their identities to become “no one”.  The same thing in my book.

House of Black and White

Grey Men are highly effective assassins because of their ability to pass completely unnoticed, whether in busy public areas or infiltrating heavily guarded private quarters. The victim himself generally does not realize the presence of a Gray Man until he is struck. Witnesses to the murder often report seeing the victim fall and yet still failing to see the Gray Man killer.   Isn’t this pretty much what is taught in the House of Black and White?  The Faceless Men uses different faces to cover their tracks when they are noticed and simply blend in to their environment as if not there.

Jaqen H'ghar blending in to cover his tracks

Comments encouraged.  Love to hear the idea's of others.  Most believe that since I present my idea's as "fact like" I'm not open to change my viewpoints which as far from the truth.  I simply look at the information presented and go from there.  If you can shine a light on another way of thinking that opens the door to debate.