Well, this being the SDMB, we’d have to have a cite to consider that assertion…
Ohhhhh no, I’m not going to be the only one! Besides, I have a feeling that could only end in tears – mine. 
Physically, I’m pretty attractive. I’m usually probably a 7, but if I’ve gotten a good haircut, I’m in good shape at the moment, and I wear the right clothes I can be an 8 or even, rarely, a 9.
My personality, unfortunately, is not as “hot.” I’m pretty shy and horrible at parties. I have a good sense of humor but you have to know me well to recognize it.
Overall, I’d say I’m a 6.
This thread troubles me. People whom I’ve seen, who I know are beautiful/handsome, are rating themselves really low. Is self-esteem that low around here?
Me? It’s rather hard to say. I’m generally cute rather than hot anyway.
I’m a chubby middle-aged man. I’m not that hot.
Nonsense. I’m a chubby middle-aged woman, and I’m smokin’. 
From the neck down, I’m actually in pretty good shape for a guy my age. But God, my face is ugly, and the random tufts of hair I have left are worse than no hair at all. I’m a 3, at best.
I used to be where you are, honestly. I experienced the same kind of teasing. I have the crooked teeth. I have had my weight fluctuations.
I guess one of the side “benefits” ( 
) of needing psychological counseling for depression, etc., is that I’ve learned to look at things differently. The people who teased me didn’t like me, some for good reasons, but mostly because I was the “new kid” who had trouble fitting in, and/or because of their own issues, or some other really poor excuse for treating another human being badly. Also, people who didn’t have an agenda gave me positive feedback about my appearance (which I needed to learn to stop discounting). Finally, I learned to look at myself more forgivingly, judge myself by the same standards that I would judge someone else by, not stricter ones.
For you, Anastasaeon, and for everyone else who rated themselves under a 5, I would say this: my hope is that you learn what I learned.
I went through High School without a single date.
A 3.
HS doesn’t count for shit. I went through HS without a single date, too. Now that was because I wasn’t allowed to date - but none of the Indian (or black for that matter) kids were ever asked out on dates. (The school was like 95% white.) That doesn’t mean we were all unattractive, just unusual.
In years gone by, I was told that I was hot by ladies that I considered hot.
However, that was in years gone by. These days, the only opinion I care about is SWMBO’s. And she’s hot!
Bwhaahaa… if you say so, but a good sense of humor goes a long ways.
I used to think myself a 7 or so, but I’ve had modeling and photography offers so I guess I’m a 9. I made my friend go on Hot or Not to prove to her that she wasn’t as ugly as she thought she was but now she is making me do the same. I will agree with whatever they say.
I went through high school without a single date as well.
Things improve.
Based on a recent post over in GQ, I think I can say that scientifically, my hotness rating is 100 watts. 
For an actual answer to the OP, I’d put myself around 6-7, with another point, point-and-a-half if I go through the effort of extra grooming.
A woman just last week said: “I like you. You’re funny. You have … something. I like you.”
Unless they don’t.
Based on what I see in the mirror & how I’m treated by people in real life, somewhere between a 3 & a 4.
Luckily, being aesthetically pleasing is not the end-all, be-all of existence.
According to me? Ten.
I’ve seen myself from about every angle I can and I’m not tired of me yet. So yeah, ten.
Other people think I’m a 6.5, but eff them. 
0 - 1 but I am hoping that I grow on people (like mold) after they know me a little while and they don’t see the flaws as strongly as someone who didn’t know me would. I think I am around a 3 or 4 when I am within a normal weight range because that seems to be a strong determinant of what people think of your looks.
So did I. That wasn’t much do to with how I looked, though.