Answer:
Men seize me from my home tear apart my flesh drink the sweet blood then cast my skin aside.
I am easy to waste and unstoppable
I go through a door but never go in and never come out.
First I may be your servant's name; then your desires I may proclaim; And when your mortal life is over hold all your wealth within my power.
I spend the day at the window, go to the table for meals, and hide at night. What am I?
I am rarely touched but often held. If you are smart you'll use me well. What am I?