PETA.. why is there such a group?

do those people who are part of PATE realize they help contribute to the killing of animals? like pam andersond would not wear fur, but more than likely her shoes are not made of plastic, they're made of leather. and what about the houses you guys live in.... cutting down a tree that was an animals home to make your own home, and the land you put your house on probably destroyed many animals homes? so there is no way some one can be completely animal friendly