Funny thing about rain. I used to get out of it as fast as I could when I was a kid. Then came football and I spent many a Friday standing in the rain. I got used to it and realized its not coming down as hard as the tin roofs tell you. Later on in life, slogging through the wet hearing it go plink plink on my helmet and not complaining along with the rest of the troop. You get accustomed to it, but it is rarely comfortable.
Military habit. Remove hat when indoors unless in work area.