Pic is just a stock image from the show, but it does a good job of showcasing the personality change between Adrien and Cat Noir. >>3530739
I came across miraculous at a dark time in my life. It helped give me a sense of optimism when there wasn't much going my way. >>3530915
I'm mentally ill in the sense that I'm shy, lack self confidence, am lonely, and depressed. I don't dress up myself (or have any strong desire to do so). I just admire someone who has the confidence to express themselves in public without self-doubt or shame. I can do that behind a keyboard for the most part - but real life is a different story.
Humans have used fiction to gain perspective on problems at least as long as we've had literature. Some of the oldest written works we have are fiction about superheros. It's an old theme.
As for "fetish wear", you're seeing something that's not there as a result of our hypersexualized culture. Modern superheroes have worn tights / body suits since the first comic books with superman, batman, spider-man, etc. You can show off and admire the human form without it being a fetish or even a sexual thing - doubly so when it's something innocent, cute, or similar.