This is amazing, yesterday I died in the nether and lost my house everything. Meanwhile I was building my new house, and I wanted to go to the nether to check more of it out, because last time I fell in the lava. Anyway I had enough obsidian to make two portals, so I made one, went to the nether and made another portal. When I went into the portal I teleported to my old house, because there was still a portal there! I'm happy.