Pprune can be a bit harsh at times. But if you sift through the less helpful posts (often plainly incorrect or fantasy) then there can be some worthwhile stuff. Obviously since Trump the situation regarding greencards and immigration has become less certain. On the other hand if you have a realistic path to being able to work in the US then it is worth seriously considering. To get an idea what life is like if you make it to the major US airlines I would recommend looking at geekontheflightdeck on youtube.