I think that this question is somewhat tricky. Being a child is good for living without thinking about what we have to do tomorrow, having no responsibilities, where playing is our only interest. While being an adult is something else. We learn so many things to prepare ourselves well enough to face any difficulties, to confront them in the future. (alternatively 'to take on any difficulties', 'to face them down in the future'). In my opinion, every step we take has its own unique beauty, and I'm so happy and excited to live in the moment and keep on learning more. Hope this is helpful!