Even if you need to slather them in barbecue sauce and tie a pork chop around their neck to make them appealing.
Okay, so you’ve stopped reading 4chan and watching real-life murders. Sorry I missed that. But I honestly don’t know where you’re getting some of this stuff from. The image of slathering a woman in barbecue sauce and tying a pork chop round her neck is just bizarre.
And, in real life, people aren’t faced with these choices, as life is more complex. Attraction is based on more than just outward appearances. It’s perfectly normal to be more attracted toward someone you like and less attracted toward someone you dislike. For most people, the brain is capable of simultaneously absorbing a number of pieces of information about somebody: this person has physical attributes that I like, this person seems nice, this person makes me laugh, this person seems confident/shy/charismatic, this person is clever/talented.
For example, I don’t much like the actor Laurence Fox. I don’t think he looks very attractive, but I also get the impression he’s not a very nice person, and I don’t think he’s a very good actor. On the other hand, a lot of women say that James Corden is very attractive. He’s not exactly handsome, and he’s surely clinically obese, but he’s also funny, clever, confident, and charismatic, and he just comes across as a nice guy.
Certainly nobody should enter into a romantic relationship with someone they find as unattractive as you describe. Physical attraction and an emotional connection are both important and typically go together.