How do male and female roles differ in your family?

There's definitely a difference between men and women in my family, even when both have degrees and are very smart. 

Usually women's opinions aren't taken into account as much as men's, and unmarried women (or otherwise taken by men) have less worth into their opinions. 

Men are usually the ones who "hold the truth" and women are made fun of if they have a strong opinion that isn't what the men think is correct.

I'm unmarried and they didn't respect my opinion or started taking me serious (or half-seriously) after I introduced them my ex-boyfriend, they thought I was going to marry. Then they thought I was respectable. They didn't support me as a professional, when talking about topics having to do with what I do every day, they didn't trust me. It changed when my uncle, a military pediatrist, started backing up what I said, and even corrected himself when I got newer information than he did. 

Women are expected to take care of the house, even if they work too, I struggled because my parents wanted me to do things for my brother, like making a sandwich for him, his bed and so on. I refused and labeled a bad woman for it, I don't mind, I AM a bad woman. I'm a good person that's all that matters.

The one woman's opinion everyone appreciates and respects in the whole family is the one of an aunt. My aunt is an international lawyer and she's making the big bucks, and travels often. She's insanely negative in her critiques, never constructive. I don't know how they still listen to her. They float towards her and always stay with her while she has time for us, her family. She has an opinion on everything and anything. Her daughters are utterly neurotic, always obsessed with their weight and their looks, because for my aunt that's the first thing that matters, the second is how much money are you making. My cousins, I love them dearly, at least the oldest and youngest one. The oldest is a family doctor, she had 2 kids and those kids were my eyes (one passed away last May, but I digress). She's both extremely openminded and utterly harsh at judging people, like her mom. The middle one is a trophy wife, she tried to make all of my other female cousins trophy wives like her. Her influence is toxic and when she comes everyone suddenly cares about their weight and vacations, and a shit-load of superficial stuff they don't need. The last one is my age, more or less. We spent a lot of time together as teens and I loved her, she's the only one of my family that didn't treat me like vermin just because I am weird. 

Point is, I don't spend time with my aunt. Everyone feels so bad about themselves when she comes around. I don't know if they notice it, but I do. I don't like that.