Yes! Definitely, Childe is a character worth going for. I love to play characters featuring unique skill sets. I love Childe's attack animations and how he meets the Traveler at various events. Unless you plan to 36-star the abyss, you can clear all the floors by investing in your characters. Though the tasks are tough because you have to dedicate time to farming, it's doable without spending any penny on the game. As for Childe, you can benefit from his massive Hydro application and use him in potential teams that can help you to clear the abyss.