There's always a good reason to draw gratuitously naked superheroes... anatomy practice for example. What do you mean, this pose is not really "academic"? :)
The truth is, I'm still head over heels for Captain America, but it's time Marvel realize we can't go on with the baby smooth Cap, the future resides in bearded Cap. Shaggy Cap. I'm pretty sure Chris Evans would agree to take on the role!
Anyways, the likeliness isn't what I hoped but the nakedness is here. Hopefully, Thor is next in line to show off the goods.