Watched porn feeling guilty

I watched porn yesterday although I've watched it briefly before it never interested me.I watched it yesterday I got so turned on soon as my hubby came home I literally ripped his clothes off I had two amazing orgasm and he had a very loud orgasm.My hubby watches it occasionly when I'm away for work I don't mind but why do I feel so quilty getting turned on by watching porn but I don't have a problem with him watching it soon as I come home he can't wait to get into my pants.