I have never been outside the US. I have never even owned a passport. When I was in San Diego, I thought about stepping across the border into Mexico
Sounds the same as me. I've been to almost every state but never out of the country. Like you, I was in San Diego but I did take one step across the border just so I could say I was in there. I owned a passport at the time because co-workers said it would be good to own one in the off-chance I would get sent overseas for work. Never did though.