He Says His Ex Is Art-OPP

A husband and wife can't agree on a piece of art that hangs in their home. She wants it gone, he says it's art. The only problem is it's tied to his ex girlfriend.

Mike & Kate-My husband of 1 year has a painting of a woman (who is partially nude) and it hangs in our home. I moved into his house when we got engaged so the painting was there before I was. This has caused many fights over the last year because the woman depicted in the painting is an ex girlfriend. She no longer lives here and my husband hasn't had contact with her in years. I will admit it is a very nice painting and looks very professional. He says he paid a lot of money to have the artist create it. I don't like it and I don't like having it in the house. He finally moved it from the living room to his office which is better but I'm still not happy. His office is where he and his buddies watch football every Sunday. It's more like a man cave then an office. I use his office daily because that's where our computer is. It's not something tucked in a back room. People see it. And ask about it every time they see it. I'm sick of hearing the story about his ex. He says I'm overreacting. It's just a "piece of art." He says just because we have a difference in opinion on what art is doesn't mean he has to take it down. I told him to put himself in my shoes. How would he feel if I had a painting of an ex boyfriend in the house. His response? "That would never happen. Guys don't pose for nude paintings."
I am hosting family for the first time on Thanksgiving and I want the painting gone. Am I wrong about this? How do I make him understand this is completely disrespectful?

Appreciate it