Why did Voldemort want to kill Harry Potter?

In 1980, at the Hog’s Head Inn, Sybil Trelawney was being interviewed by Albus Dumbledore to become the new Divination professor at Hogwarts. During the interview, Sybil made a prophecy that, at the end of July, a child would be born that would have the power to vanquish the Dark Lord. Severus Snape overheard the conversation and immediately told Voldemort. True to Sybil’s words, two children of well-known wizarding families were indeed born by the end of July—Harry Potter and Neville Longbottom.
It is unclear why exactly Voldemort decided to go after Harry, but many believe it was because of the fact that Harry was a half-blood as well, and Voldemort felt a stronger connection to him. On 31 October 1981, after Peter Pettigrew betrayed his friends and told the Dark Lord that the Potters live at Godric's Hollow, Voldemort went to the house and killed Lily and James Potter, who desperately tried to protect their son. Voldemort then tried to kill Harry as well, however, he failed because Lily’s love for her son was stronger than the killing curse. Thus, Voldemort only managed to scar Harry’s forehead, and unknowingly to both of them, transferred a bit of his soul into the boy, which made Harry a Horcrux and the only survivor of the killing curse in wizarding history.