The only concept or experience or core belief that I can attribute my other-ness to is that I just started out a weirdo and I stayed a weirdo. And it took me a long time to embrace my outsidership and see it as a strength rather than a weakness.
Being vegan is easy. Are there social pressures that encourage you to continue to eat, wear, and use animal products? Of course there are. But in a patriarchal, racist, homophobic, and ableist society, there are social pressures to participate and engage in sexism, racism, homophobia, and ableism. At some point, you have to decide who you are and what matters morally to you. And once you decide that you regard victimizing vulnerable nonhumans is not morally acceptable, it is easy to go and stay vegan