People choose their favorite characters based on all kinds of criteria, and I think it's okay for different people to put different weight on different aspects. In fact, sometimes I think I'll have one character as a favorite because I relate so strongly to another character. Like in Miraculous, Adrien has been my favorite character all along, and I've recently realized how much I have in common with Marinette, so I feel like one of the reasons I love Adrien so much is that I relate to Marinette, and she loves Adrien, and we have similar taste.
In the case of Fruits Basket, I think that Tohru and Momiji are both good role models, and Momiji happens to be the one whose behavior I admire the most. Not because I don't like or appreciate what Tohru does, but because Momiji shows more strengths that happen to be the ones I aspire to. Tohru's extended family are genuinely toxic people, and she has to learn that it's okay to love them from afar. Very, very afar. That's something I think I've gotten pretty good at. Momiji's family rejected him, not because they're bad people, but because they're human and have their weaknesses, and he's able to love them anyway. And he's able to stand up for people like Tohru when others mock them. And all kinds of other stuff that I don't have time to reflect on right now.
So yeah. Have your own favorite character. It doesn't have to be the same as anyone else's, and if it's not, that doesn't mean you're missing any important points.
Today I'm thankful for getting most of our odds and ends done today, managing to complete several snap requests, getting to see Gilderoy's super cool parrot puppet, the crepes from the grocery store being pretty tasty, and the hope of one day actually seeing that new Illumina Pokemon.