Why do some black people think that light-skinned blacks and multiracials have a superiority complex?

I have a black mother and a multiracial father. My mother has brown skin. My father has a yellowish hue. I inherited most of my father's color. I grew up in a diverse environment and seldom payed attention to race or skin tone. Every now and then I got heckled by a group of black kids because I "acted white". There were quite a few times at church when I got called out because of my skin color. Sometimes it gets a little annoying when I'm at work and I'm explaining to customers what my nationality is. My dad and I have been mistaken for Puerto Rican, Mexican, Samoan (very frequently), Filipino, and for some reason Asian. Sometimes its funny when I'm at the hair salon, which is run by Dominicans, and it shocks all the clients when my mom comes to pick me up and I say 'hi, mom! I'm ready.". There are times when I wish I was dark so I could look like Mom and get the same attention and admiration she does. Can you imagine being in your mother's shadow? All through school my friends would say stuff like " Oh my gosh! Your mom is sooo pretty!" Guys that I had really liked would say stuff like, " Dang! Your mom is FINE! Your mom is hot." I'm in the background thinking " what about me? " I felt really crappy about that. I'm a nice person and down-to earth, but I'm not that much to look at. I'm homely, 5'4 and 176 lbs, big hips, average- size boobs, I just barely have a butt, awful acne, bad scars from acne, and I get really bad dandruff. If I were the dark like my mom, I would probably have one-fourth same charm as her. I wish wasn't light-skinned.