Why does everyone like my brother better?

My Younger brother (ten and a half years my junior) is ALWAYS treated better than I am. By everyone! My parents, today, while I was watching tv for the first time this week, just switched the channel wihtout asking, and put a movie on for Izzy. My grandmother favours him (her only grandson) and even though she won’t admit it, i know she loves him more than the rest of us. She is always ‘Oooh Isaac this, Isaac that.’ Even when Isaac isn’t around she won’t shut up about him. She took me out to the movies, and i was like, YAY quality time with grandma! I haven’t had this since Isaac was born. It was all just to butter me up before telling me over lunch how horrible I am to my brother. Apparently, it is border-line child abuse to do your seat-belt up BEFORE saying hello to your brother. She went on and on about how he would never love me, and reduced me to tears. I love my brother, but I also hate him. I know I sound like a jealous five-year-old, but I am really sick and tired of everyone forgetting about me. I asked my mum for a hug coz i was REALLY depressed, friendship issues and what not, and she went, “Hmm.” and then picked Isaac up and started talking to him. I HATE THEM! Any advice?