Is life worth living?

Just a question. I got home today and I didn't feel like doing my homework. I started to think, "What am I doing here? What is my real purpose for being here today or any other day? I mean, does anybody really even care about what I say or think or do? What is the meaning of life if all I can think about is sadness?" It really got me mad because I am frequently ignored in school when I try to talk to my friends. My grades are always bad and nobody helps me when I ask. I get made fun of for being an Indian everyday. It seems to my parents what I say has no meaning to them as long as I get decent grades to them *A+*, which they think I am getting. I hate having to take away my report cards and stash them in fear of getting yelled at. What is the point of doing anything if no body cares? Why even try to succeed when I am always surrounded by sorrow? I think too much is what I am guessing. I always guess the options in a situation that probobly shoudn't be done. All in all my question for the help forum is...

Should I go on living if there is nothing to live for?