I would agree.....however, nobody should truly know your sexual orientation at work, in the first place.
I don't run around telling everyone I am straight....and am truly offended when non-straight people feel they have to tell everyone they are gay.....and make a big show of it.
Only your close friends need to know whom you find attractive.
I also don't think it appropriate for straight men to have screen-savers of bikini clad women, nor women to have desktop images of hunky men on the beach.
Sex has no place at work.
So I presume you oppose family photos being placed on a desk?
Not at all.
I had a lot more in this post, but simple is better. Of course, it depends on the photos. Generic family photos are not a problem.