hmm, well, you're one to talk about letting people like what they like when you're going batshit on me about a post that does not mention jegulus anywhere. do you see me saying a single word about james? the only two names i mention at all in the post are regulus and umbridge.
so what the hell does that have to do with jegulus?
answer: nothing. but YOU can't handle your precious little fascist white boy being shipped with anybody but james, so you got on my blog and chose to scroll to my post that's just talking about a ship i like, and then hating on me just for talking about kittywater, a ship i happen to like! you're the one that's shitting on me for no reason! you're the one that needs to let people like what they like!
also, let me say a few things based on what you've written.
the other two things we know about regulus in canon, the things that jegulus stans love to purposefully ignore, are that he had a voldemort shrine in his bedroom, and that he got the dark mark by choice when not even his parents had it. regulus adored voldemort. and it doesn't matter that he changed his mind. he still helped voldemort kill thousands of people out of sheer hatred for a minority group that did nothing wrong. he's still a racist and a fascist. and he didn't even die for those oppressed people. he got upset about voldemort's wrongs only when it affected HIMSELF. HIS slave. so yeah, i'm gonna go ahead and say that regulus is not a good guy. sorry? but i actually read the books.
there are so many more differences between jegulus and jily than the queerness. first of all, regulus is an active oppressor of the minority groups in this universe, while lily is a member of said minority group. second of all, regulus has no personality in the books while lily has a beautiful, complex, well-sculpted personality. your fanon little wet cat doesn't count.
and the most important one. there is NOTHING about lily and regulus' family/sibling situation that is REMOTELY similar. if anything, they have opposite situations. you are not actually comparing sirius to petunia?? let's do a little review of their situations, shall we? sirius was being abused by his parents due to his disagreeing with their blood supremacist views, and as a result, he ran away for his own safety and peace of mind. regulus could have left with sirius at any time, but regulus CHOSE to stay with his parents and become the new heir. regulus CHOSE to become a death eater even though the black family was not affiliated with voldemort whatsoever. now, lily was the favorite child of her family, and this became especially blatant when she found out she was a witch and petunia wasn't. petunia was so overwroght with jealousy that she made lily's life a living hell, to the point where lily had to completely abandon the muggle world for the wizarding world. when looking at these two stories side by side, you can see that regulus isn't similar to lily at all. regulus is similar to PETUNIA. :) so if by similar, you mean that regulus is similar to lily's abuser, then you're right there! but other than that? i think you're just delusional.