I've travelled internationally maybe a dozen times in my life. I've never once had an issue on re-entering the country. In fact, I've had a grand total of two "incidents" while traveling:
1) A security agent in Amsterdam gave me some (understandable) stern looks because my passport had gone through the wash, and was very much worse for the wear.
2) In Warsaw, I misunderstood a security agent and ended up getting a large man with a gun mildly excited (which in turn got me a little excited...). Tip: If a security screener says something in a language you don't understand and waves towards your bag on the conveyor, don't just assume it means "Take your bag and and go," it might mean "Step away from the bag"
1) A security agent in Amsterdam gave me some (understandable) stern looks because my passport had gone through the wash, and was very much worse for the wear.
2) In Warsaw, I misunderstood a security agent and ended up getting a large man with a gun mildly excited (which in turn got me a little excited...). Tip: If a security screener says something in a language you don't understand and waves towards your bag on the conveyor, don't just assume it means "Take your bag and and go," it might mean "Step away from the bag"