Now there's this common habit amongst SL Residents to mix two closely related things together. Regions and sims are NOT the same thing - a region may take up the entire resources of a sim, or a fraction of it - the sim is a physical unit crammed somewhere in San Francisco or Texas keeping part of the world up.
Agents and avatars are two different things as well. Your agent is your identity on SL, and your avatar is a 'physical' representation of that identity. To muddy the waters, even Linden Labs routinely blurs the lines between these two different things in communications.
Moriash Moreau documents an example of the further indignities that avatars in SL suffer from. Read. Laugh. Then treat your fellow avatars better in future!