Well, yeah, it’s normal.

When you find goodness in the world, and it shares a common denominator, it is perfectly normal to develop some degree or another of affection/attachment for that common denominator. You don’t have to be depressed for that, it just makes it easier.

It can turn into an unhealthy obsession, and it’s possible that the motivations may not be without strings (cults and such), but those aren’t going to be the case every time.

Like, for me, I have a deep and abiding love for gay culture, specifically gay male culture, because of how much love I have received from that subculture. That has expanded over the years to embrace the entire rainbow of the LGBTQ+ community (with some extra affection for my trans folks). You go for a while needing acceptance and open appreciation, you’re going to end up returning it when a specific group is where you find it.

Truth is that the more sub a subculture is, the more likely the people in it are to be outsiders in some way. Maybe marginalized, maybe just atypical; but whether they were individually outsiders that found solidarity, or they became such by joining the subculture, outsiders have a tendency to be at least a little more accepting of other outsiders (though you run into some weird shit where you get schisms sometimes).

And it can be local. As an example, I’ve had universally great interactions with juggalos in my area, but they can be major dicks in other places. As another, furries tend to be really chill with non furries that accept them but can have bitter faction wars with each other.

Don’t let yourself get sucked into any cult shit, but otherwise find the goodness of humanity wherever you can, and enjoy it. Nothing wrong with that