I can't fantom getting an erection in the presence of a hambeast, let alone putting in one.  If we were the last people on Earth and were the only chance to repopulate, I'd hesitate as to whether to even do it.  If I decided to go through with it, I would just jerk off and then wipe my jizz off on her hand and let her take care of it, while I do everything to put it out of my mind. There are girls with certain types of body frames who carry a decent amount of body fat and still look good.  But at some point it becomes unsightly (when there's a belly or an exaggerated pear shape), even though they might not be cottage-cheesy yet.  But then eventually it crosses that line where it looks like a disease.  You see it and your animal-brain immediately sees that this thing is a goner.  It's uncomfortable to be around in the same way it's uncomfortable to be around an alcoholic or someone else who is in a bad state that is apparently manageable.  Pity fucking a hambeast would feel like enabling.  Body-positivity is enabling ...