Sigh, I want to go to the US

During my 7 years of studying abroad,
I kept saying how much I hated being there and how I just wanted to graduate quickly and go back to Korea.
But now that I'm back in Korea and living a life crushed by reality, I find myself missing those days.
I want to go there even if it's just for a trip, but I can't find the time. Sigh.
I wonder why I hated it so much back then...