It can be anything

What’s something you used to love but as you matured started losing interest/disliking it?
For me, it’s boys over flowers (the manga & drama) and tsundere mc trope.
I used to LOVE bof. But as I matured, I realized how toxic domyoji and makino really were after rewatching it 2-3 times and as for the tsundere trope, I just don’t find the appeal in lying about your feelings so the relationship feels one-sided.