Things in anime that shouldn't be a thing

There are so many things im anime I dont agree with. I can't stand teenage and adult relationships. And ppl get offensive when I say that. I wish ppl would stop defending these giant age gaps the MC will be like 14 or 15 years old with a 500 year old love interest when I was younger I didn't pay attention to it but now im like wtf. Also I can't stand incestuous relationships in anime. It's mainly cousins dating but to me cousins are like siblings. Also cant stand these toxic relationships its annoying some of these anime characters are too toxic to the main love interests and they end up with that character who put them through all types of torture and bullying thats way too extreme. I would never be with a man who put me though that just because he loved ke I would think he was sick in the head.