I think the fandom supports Snape irrationally because of Alan rickman and how much he is loved. In truth Snape is not a strong person neither a hero. A great spy yes. But not a great person and obviously not a better choice than james potter.
Lavender Brown aesthetic- the girls of hogwarts: “‘She got a letter from home this morning,’ Parvati whispered. ‘It’s her rabbit, Binky. He’s been killed by a fox.’… ‘I should have known!’ said Lavender tragically. ‘You know what day it is?’ ‘Er –’ ‘The sixteenth of October! “That thing you’re dreading, it will happen on the sixteenth of October!” Remember? She was right, she was right!’”