flu shot for babies, necessary??

Crystal
So my daughter just turned 6 months on the 17th and if I remember correctly my pediatrician mentioned that they would recommend the flu shot at that time.  I'm in the middle of researching the pros and cons of this before her appointment on the 28th but while I do that I was just curious to know how many mommies are letting their little ones get this vaccine and for those who aren't what are your reasons??
Thanks again