Are your parents partial?

The following is a true story from a netizen: we are siblings and my sister is prettier than me. People will often say "are you sisters, why don't you look like each other?" I was deeply depressed each time when I heard this. The only thing I feel confident is that I studied better than my younger sister. I failed the college entrance examination for the first time and my parents asked me to try it again the next year; when my younger sister took the exam last year and her score didn't pass the limit for the undergraduate, but she persisted not applying for the technical college, my parents finally relented and sent her to study abroad. I felt unfair. Many of my classmates had gone abroad when I didn't do well in the exam. I also longed to go, but my parents refused. When it was for my sister, they turned out to say yes. I once mentioned I would like somewhat to do postgraduate study abroad; they still disagreed, saying the younger sister will have to spend lots of money and it is infeasible to afford both of us.

Parents' love is universal! There is no parents who don't love the children! Do you have the same trouble? Are your parents partial?