Damn,i could think of millions of reasons to be a fan!
But i'll just tell you some ;P..
First of all, BSB CAN SING! Yes,they sing like..don't even have words for how good they sing!! ..I could like just stay hearing them sing forever i wouldn't mind!
Then they have great songs, that i think everyone can relate to,and that can help you in bad times and in good times!
Just can't forget how they aprecciate there fans!And i think that's really important..