"If this is a trap, it's a very good one. I just can't seem to figure out who would use it and for what."
There were so many better ways to lure someone in, far more efficient as well, given the amount of power this place must need. To create a world was staggering, on the level of requiring an infinity stone to do. Even Thanos wouldn't have gone to all this trouble, especially not given how the Mad Titan normally dealt with his enemies. Thor was mostly past caring though. Mostly.
"Regardless, I agree. I feel better here than I have in a long time." The "with you" part was implied.