You sure ask a lot of questions within the details! I made the decision to move from NY to Sweden about 5 years ago. I didn’t know anyone there and really had no clue what I was going to do, but just decided to do it. (I had visited it before I moved.) I went, left everyone behind and lived there for 3 wonderful years. Everyone considered it an irrational move; I agree with them, but it was the best thing for me at the time. As for explaining the decision, I needed a change. I was stuck living with roommates I hated, feeling depressed and feeling like a mental breakdown was coming. So I left.