Nothing is stupid my dear, however you cannot change your parents mind, they only do the best that they know, and as far as they are concerned, the match is wrong. They could be right or could be wrong, only time will tell. My suggestion is not to go against them, instead communicate and find out their real reasons. Once you realize their concern, don?t react, instead take it to your heart and think about it for a while?
Now it is wonderful that you love someone, the question is, is that other person truly love you the same? How did your parents closed the door in your face? Did they say you are not allowed to love, or they don?t approve the guy you are with? How old are you? And how old is this guy?