No. I don't find it attractive and as sad as it may sound, being physically attracted to someone does plays a role when it comes to relationships. Isn't that what kinda differentiates a friend from a partner? I wouldn't mind being friends with them.
I wouldn't go as far as some people and call it 'disgusting'. It's not appealing, no, but I'm sure a morbidly obese person already knows that. They often have psychological problems and didn't have help when their whole excessive eating thing began.
It's a sad position to be in.