Originally Posted by redhawk23
Thor just being able to come and go out of Asgard back to earth kind undoes the ending of his movie, or at least confirms my dislike for the ending.
Instead of stranding him in Asgard sad because he can't be with the woman he's known for a week, they should have had him get stranded on Earth, separated from his home and throne.
Loki mocks Thor when they first meet, saying that Thor must love that Loki got the Teresect because it created an excuse for Odin to exert a lot of power just to send Thor to Earth. He even asks how much dark energy did the All-father need to send Thor now that the Bifrost is destroyed.
So that shows us that getting to Earth is a big feat even for Odin without the Bifrost, and sending Thor was done only to capture Loki and the Teresect. As others have said, it was made clear that the Teresect could open portals, so once Thor had it, he could get back to Asgard easily.
And with the Teresect back in Asgard, Odin can no doubt fix the Bifrost or at least send Thor to Earth more easily... for Thor's sequel no doubt.