Perhaps it's because she often comes across as a little stuffy or too uptight. Diana is a warrior but we don't often see the softer side of her. She always seems focused on fighting off evil and we rarely see her simply unwind. Is this what makes it so some don't want to read about her? Does she come across as not human to readers?
I know there will be some fans saying Wonder Woman "doesn't need a man," but would having a boyfriend make her seem more human?
== TEASER ==
Wonder Woman has dated in the past. She was even practically engaged to Nemesis (which thankfully ended). Would seeing Wonder Woman going to the movies or going for a walk in the park with someone make her more appealing?
The other question is who is worthy of being Wonder Woman's boyfriend (or girlfriend)? Most people always see Wonder Woman and Superman as the ultimate super-couple, but he's already married. There was some flirtations between Wonder Woman and Batman in early issues of the current Justice League of America series. Unfortunately, Bruce has issues of his own. Besides being 'dead' and trapped in the past, he's also recently given his heart to Catwoman and Jezebel Jet (and we know that didn't go too well). Who is worthy to be Wonder Woman's boyfriend? Does she even need one?