My father and mother have been in the US military for 20 and 21 years, respectively.
I have known them both for less than ~8 discontinuous years each of my current 20 year life span.
After I turned 18/high-school graduation, my father took me on both a bailk-bayan (filipino for "return to country"), and a trip around the world (lol, SE / E Asia). (I am Filipino and Nicaraguan).
Thus, we traveled to Thailand, The Philippines, Malaysia, Japan, Cambodia, and South Korea in a time span of two months during the summer after I graduated.
In two months time, I had never had the ability to feel so ... "lost."
I saw some realities of ?third?/?second? world countries e.g., skin-and-bones people, but more importantly, skin-and-bones babies crawling on concrete streets and a lot of people either begging or attempting to scam you (We didn't just stay in the metropolises or tourist areas), seeing babies and children crawling around on the fucking street near dangerous things (roads, cars, etc) made me fucking sick to my stomach and I think I (subconsciously) refused to eat anything for ~2 weeks, I lost 15lbs because I was sick to my stomach.
Yeah, you can easily imagine third world realities in your head, our watch youtube videos, or some shit, but being right fucking there, in the flesh, it fucking disgusts you infinitely more.
However, that was only one part of the trip, the other of course, the "lost" part was fun.
In the Phillipines I met relatives from generation(s) past, ~30 people living in a single concrete house etc.
In the Phillipines + the other countries, traveling was cool as fuck yo. Both the touristy and non touristy.
No fuckin cell phone or technology for 2 months was...awesome. Just fucking...there.
It should be noted that I have never-ever-ever felt "culture-shock," ( I chock it up the the meta-realization of diff cultures/environments)
Edit: Oh, I live in CO, USA currently, slightly relevant to the traveling