My husband doesn't want nudes?

This has been stewing in my brain for a while now. My husband has never asked for nudes. Not once in our 5 years of being together. I ask for pictures fairly regularly and 90% of the time he says no. It's not because he's worried they'll go public or anything, he claims he's just not into that. He also says why would he want sexy pictures of me when he can have the real thing (me) any time he wants?

But here's the kicker: he watches porn almost daily. He uses it to masturbate before a shower. We don't have sex as often as we used to but he'll still masturbate almost every morning before work, so still watching porn.

I just don't get why he wouldn't want pictures of his own wife if he enjoys porn so much. He used to have obnoxious half naked pictures of women as his phone and computer backgrounds until I asked him to change them. He'll outright reject my offer to send pictures with no strings attached.

I asked some guys about it and they all said I was overreacting. Am I? It makes me feel a little under appreciated, like my body isn't as attractive to him as some strange woman on the internet. It hurts to think about. And I don't know any guy who would turn down nudes from his wife or girlfriend.

He's also away on a work trip for a couple of weeks, so I have all the time in the world to mope and think too much...