I don't pick characters on if they are attractive or not, it is if they feel right. You can look through my CS's and see many attractive people but I did not do it on a conscious level. Also, not all my characters are human or have a human image but have a description instead. If the image or text does not feel right then I won't use it. I play more female characters than male because something about them gets my brain working. It is like 85% Female and 15% male, a few of my male characters don't even have a physical appearance and hide behind armour or costume. 

For example, my futuristic like male samurai has an appearance of a samurai from the film Sucker Punch. I use the armour as his appearance while going into some detail via text. My crazy man in a bear costume, however, has no physical description or appearance. If he happens to take it off I am very vague about them. So in a sense, the level of attractiveness is not mentioned or even really hinted. The level of attractiveness does not enter my head and so I don't write about them. In fact, the level of attractiveness for my Gladiator is also very vague. He has a fit body yet his face is hidden, from that the level of attractiveness can be whatever I or my partner wants it to be.

The female characters on the other hand just happen to be attractive, by no fault of my own hey get picked because they are what I imagine my character to be. That or the image sparks a character idea and so I go with it. But just like a few of my male characters I have the odd female characters who have no physical form and so I am vague with them. My knight who went through several stages is my example of this. I feel the personality, stance of the character and things of that nature are more important. 

The thing is attractive and nonattractive people exist, people use attractive people for whatever reason they have. Like I said before I don't think that way, it is more of this image is right or this image has sparked a character idea so I use it. I feel female characters are user to create then male as I don't get that spark with them as much as the other gender.