I can see where you're coming from, most anime can be overbearing with its teenage (build from mix of tropes) characters, in a setting clearly designed to please fantasies rather than to connect with the viewers, spurting over-idealistic and ignorant lines, has overused plots, everything solved by power of will and strong heart. Perfect dreamland for escapist. Total nightmare for realist.
But well, just like everything else in this world, there's good anime and bad anime, childish ones, thoughtless ones, thoughtful ones. There are dozens of anime released each season, can't expect everything to be original. Only one or two stands out, and even rarer stands the test of time. I've been watching anime since I'm 8 so I'm pretty sure it's not the novelty that makes me keep watching. Tho maybe the nostalgia makes me a bit lenient toward its quality. Yet I genuinely think anime could offer compelling stories and characters the way other mediums of storytelling couldn't.