Why does voldemort wanna kill Harry Potter after book four?

i know you might think its a dumb question, but in the sorcerers stone,harry interferes with voldys plan to come back 2 life,so voldy wanna kill him so he can do the plan easier.in the chamber of secrets,once again harry gets in the way of voldemort coming to life and kills his diary,which is a horcrux,so he wantsta kill'm, in book 3, we dont see voldy,but we find out wormtail is a follower of him. in book 4,he needs blood from the enemy,so he conjures a plan using the triwizard tournament at hogwarts,and uses harrys blood 2 come back 2 life(with other ingredients 2)then wants 2 kill him......but in book five,the prophecy an all that,wut does he want harry for,why does e wanna kill;m?