When I first joined Bloodlines and wanted to give a vial to my liege, I had to go purchase some vital, consume it, then put it in a blood vial.  I can tell you, it confused things for awhile because it showed I had vital AND humanity which generally wasn't supposed to happen.  My liege wanted to know what the heck was going on... which kind of ruined the formal presentation I had planned for giving her the vial.  I should just have been able to fill a vial with some of my Humanity.

The vast majority of players in Bloodlines are Human.  It's time we got some respect!  Yes, it's true many are alts, but that doesn't invalidate the multitude of active players who choose, for whatever reason, to remain Human.  The Human HUD costs as much as any of the others yet offers so much less (although a new benefit has been added since I joined).  It's time "being Human" is recognized as more than just a waiting stage until someone can become immortal.

But even if someone doesn't plan to remain human for long, Humanity vials can be a terrific way for new Bloodlines players to show devotion to their lieges in the beginning stages of their Bloodlines life.