I feel ya with the overthinking...Do NOT look at that D5535 thread, horrific stuff.
This process really messes with you, our lives are tied with our spouses/kids and can get messed up should they choose to mess them up. You can do everything right, be law-abiding, and still be put in a hole.
I can't sleep properly anymore and when I do the dreams are disturbing.
As a Canadian , I like the US better and feel it is the greastest nation on Earth. However , sometimes I feel this process is not worth the stress.