HP but Voldemort isn't a dumbass AU:
(this is purely for stupidity's sake)
Young tom riddle stepped back and reviewed what had happened that day, a wizard (?) had come and explained to him that he had magic, he was a wizard also. This sprang many questions up into the young boy's head; surely he had to be better than everyone else? He had magic. Why wouldn't he be better than the others in this orphanage? He had magic and they did not. Learning about magic today had also meant he had learnt about his parents too. This rocked some of the questions in his head because if his mum had love someone without magic ,a muggle, enough to turn to drastic measures to procure his love in return, then these muggles mustn't be too bad and so this young boy continued his adventure into the wizarding world with the view that maybe his magic had him better in his view than other that still was nothing to hate muggles for
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Tom Riddle, now growing into a young adult, wished that he could cease everything and stop it; he didn't want life to ever end. He wanted power over the force that plagues all who live and haunts them as they grow waiting to take them with it, he wanted his own control of death, he wanted to be immortal.
He couldn't have the philosopher's stone because that was already under the possession of one Nicholas Flamel and so his next best choice was horcruxes, maybe they were a bit violent but he could deal with that especially if that was where his murders stopped. For the idea of things he gave himself a max murder number of 10 so that he wouldn't go estray. Tom riddle located 5 kind of shit wizards and planned to kill them to help the creation of 5 horcruxes using the objects of a random sand grain, two random pebbles, a twig and a random fork. Once the horcruxes were made and the murders done, he chucked the horcruxes into the deep sea. Next he went into hiding until a time when no one would remember his name and so he left himself to live a mostly peaceful ever long life.
The potter family was never destroyed, a young boy was never thrust into the arms of a unwanting family, a kind hearted werewolf Remus lupin was never racked into depths of guilt, a dark haired god parent with a fiery heart was never wrongfully imprisoned and a young boy who felt out of place in is friendships was never led astray and forever kept their trust.
