Good guy Voldemort

Yea?

He's tried to kill Harry plenty of times beforehand to the battle of hogwarts

Harry dropped out after his sixth year at Hogwarts to hunt Voldemort's horcruxes but never returned to complete his seventh.

its because he is so evil, he lets harry sit through the school and then ruins his vacations

im not exactly a follower of Harry Potter, i just saw that they both hate each other. Voldie killed harry's parents. I just wanna know why did Voldie kill them and why does he want to kill Harry as well?