seams on the inside or the outside

Am I the only person who wears their underwear and nightwear with the seams on the outside? It seems odd to me that most people wear them with the seams on the inside, next to the skin. Nobody sees your undies, so there doesn't seem to be any rational reason to wear the seams uncomfortably inward.

It is like a house. The exterior wall is smooth, with the battens on the inside. The interior of the house has this reversed, with the smooth walls inside and the battens hidden behind them inside the walls.

I think it's good sense to keep the uncomfortable seams away from your body. Why do people put up with seams pressing against them? Maybe they don't find them as uncomfortable as I do.