some thoughts re: laurie, allyson, and michael myers' overall character and existence being directly connected to The Final Girl™
i'm compliant with halloween 2018 & kills - so michael and laurie are not brother/sister for me. he simply saw her one day and became obsessed with her on first sight, which is the only thing draws him out of his house in 1978 and after her. and for me, this didn't happen because she was reminiscent of judith - it's because she was the opposite.
i think a lot about my heart is a chainsaw, and how it goes at length to speak of how the slasher cannot exist without the final girl, and that the slasher helps her transform into her complete, fully realized self. michael pursues laurie and draws her to act in violence against him because he knows they're equals - it's not a predator hunting prey. it's a dance. when he sees her in the window, he immediately recognizes that fact. the fact that he went home and was immediately drawn out of it because of laurie? yeah. why else would he have continued? likewise re: allyson.
and i think without having this Object of Obsession (lmao) michael has no standing as a character for me. it's what made halloween kills, beyond reading heavily into it re: michael possibly feeling the same level of obsession toward allyson hence not killing her on the 3-4 occasions in which he could have, feel extremely pointless and empty to me. not a huge fan of the idea of michael killing Just Because He's Evil, yk. like yes. he IS evil incarnate, but he's obsessive and an unstoppable force once he's dedicated to something - or someone. to what purpose? who knows.
the 2018 novelization implies he saw allyson running on halloween morning on lampkin lane and subsequently felt watched throughout the day. michael slowly picked off her friends, then killed her father, then her boyfriend, then her mother. it's all very, very intentional, and the cycle continuing albeit in a much more brutal manner because he's been lying in wait for 40 years. he's angry, repressed, and more violent and powerful than he was in 1978.
and so this is why allyson specifically is extremely important to my interpretation of michael and why i was heavily disappointed by ends. the only thing i really take from it is that michael was willing to work with corey to find allyson until he led him to where she is, which made him disposable to michael (hence why he killed him immediately).
all of this being said, i truly do think michael spent the 40 years he was incarcerated thinking about laurie. which is why, in the 2018 novelization, he still thinks of himself as a 21-year-old and laurie as 17, and the passage of time means nothing to him because he hasn't developed cognitively whatsoever. the only times in which he's truly been lucid ---- between the extremes of loomis drugging him into a catatonic state vs. sartain most likely not medicating him at all and endlessly enabling him ---- has been in pursuit of laurie.
considering it's been over 50 years since he killed judith--and he was literally in kindergarten when it happened--i don't even know if michael remembers killing judith at all. i don't even think 6-year-olds understand the meaning or permanence of death. so yes, i do definitely think by 2018, michael would not remember judith's death much if at all and is likely returning home (again) to look for her and look out her window (the compulsive need to look out her window, it's the mental illness innit love) vs. his original intent on recreating his first murder in 1978 with laurie's friends ---- but by that point, i think he returned home both to return to judith's room and also to lure allyson or laurie to him at that point.