Eh for me it's a lot of things. For one just roots, family and friends. Then next is work, I'd have to find a new job over there (doubtful my current one would let me work abroad), and I'd need to see if visas would let me work over there, and for how long. I would probably make less over there, but cost of living is lower too, so I'd have to do finances. Most countries don't let you own property unless you're a citizen, and I wouldn't be, so I'd have to rent for a while. Path to citizenship would then be difficult, and I would have to pay taxes for both countries. Then just pure logistics of what do I do with everything here, would have to basically start all over. It'd be much easier if I was in my early 20s, but I'm nearing 40 which makes it much more difficult.