The only difference between the two for me is what I'll do to the person who tries to make me a victim in either incident.
Murder: Unless the person is armed or using an incendiary device, they die. Unfortunately, I'll be too afraid to make it slow, but I will...end...them.
Rape: Same result except I will be angry enough to get creative.
My hatred of rapists is probably irrational, but I can't help it. I hate being touched without my permission, and for someone to force themselves on another person like that, is the greatest torture I can imagine(other than watching loved ones be hurt/killed). Maybe it's because I'm a bit of a control freak.