If you are anything like me, these questions will stick in your mind and the reasons for it being "hidden" will get worse and worse in your head until you talk to him.
If it makes you feel any better, I encountered the exact same situation a year ago....and this year will be our 10th anniversary! In my case, some of this "material" (4 DVDs hidden WAY in the back of the storage area of our VERY deep entertainment center) featured VERY large-chested women of a totally different race! That didnt bother me in and of itself, except that if he is having fantasies, then I might want to be involved in them...and there is no way on EARTH that I can turn myself into EITHER a black OR a very large-chested woman for him!
THAT was the thought that kept turning over and over in my head.
I think MOST men own some of this material, and by "most" I mean 99.7%.
In all probability, he was not hiding it from YOU as much as hiding it from anyone else that might be popping by. Porn, by nature and throughout history, is "stuff-to-be-hidden". I have never been to a home (with the exception of a Frat House when I was in college) where it is sitting out as a coffee table book.
When I finally talked to DH about it, it turns out that these were a "gift" from a friend that has his own "porn DVD duplication and distribution business" (this I knew :rollseyes: ) and these were some leftovers that no one else was buying.
I had gone over it in my head so much that I was QUITE nervous and didnt know HOW to bring it up....I think I started with, :( "Huney....do you wish I was a large-breasted black woman???"
Just TALK to him in a non-threatening way. Let him know it caused a smidgen of insecurity on your part (even if its just the fact that he was hiding ANYTHING from you). You'll feel much better.