Hall of Infinite Doors

You chainsaw off your arm. By now you are officialy insane from this hallway. You don't need any more proof that it is indeed infinite. Now, as you put down the chainsaw, your bloody limb lying on the ground, you can finally open up this door. The random door...

You grab the handle and pull it open. You step in and....

You can't believe your eyes. All that there is in this doorway is a small closet with a single 1$ bill sitting in the middle.

You chopped off your arm for one dollar... what are you feeling?