Twenty possible Reasons Harry Potter lived past the night of Halloween.
1. Voldemort didn't aim properly and the curse hit the compact mirror of Lily's that caused the curse to rebound on him.
2. Voldemort saw Harry and thought, 'what a cute little baby!' and hence there was no intent behind the killing curse.
3. Harry Potter was an immortal elf. (Think LOTR)
4. Harry Potter's shiny new toy shined light directly into Voldemort's eyes causing him to misfire.
5. Voldemort mispronounced the spell as Avada Keshavra which is a hair remover spell and since both of them didn't have any hair it exploded.
6. Voldemort tripped on Peter in his rat form and fell while firing the spell. (Boy Pettigrew is gonna get a lotta crucios when Voldemort is resurrected.)
7. Harry Potter thought voldemort's wand was his new toy for the day and as all kids do broke it at first opportunity.
8. Harry Potter had sharingan and copied it.
9. Harry had a cross shaped pendant which caught the brunt of the curse. (Do English movies never get tired of old tricks?)
10 .Harry Potter rolled over in his sleep.
11. Voldemort had emptied his quota of killing two people a day.
12. Harry Potter was actually immortal Voldemort from the future who wanted to stop his old self now his future self from doing all those things.
13. Voldemort realized he would get bored after sometime if he was immortal. So he decided to spare him for some entertainment.
14. Voldemort slipped in the place where baby Harry had peed earlier and hit his head and died.
15. Voldemort realized that Harry Potter was J K Rowling's creation and only she could kill him.
16. J K Rowling threatened to make Voldemort gay instead of dumbledore, if he killed Harry Potter.
17. Voldemort decided a baby was the perfect gift for his girlfriend Bellatrix.
18. The door to the nursery was too small and Voldemort was too proud to bend his head in front of his enemy.
19. The curse hit a mosquito that died and this made all other mosquitoes attack him.
20. Harry pooped and Voldemort fled the room at the sight and smell.
