**sniff sniff** is that fear I smell big?!?
I was shaking my head reading your post and kept thinking - why WOULDN'T he go??? You're not making a lifelong commitment so if it doesn't alleviate your depression symptoms you come back to the US and deal with it.
I spend an obnoxious amount of time with only myself. No job right now, plus I'm a natural isolator. A recipe for disaster.
In all seriousness, what does your gut tell you? DO NOT think about it first and formulate an answer. Sit quietly and listen to your natural instincts. And then pull the trigger on whatever your gut tells you to do.