This is a question and answer of utmost importance. The world at large and probably every human at some point in her life has asked the question “Why am I here?”. To start a catachism with the answer to that question makes perfect sense. With this knowledge, my kids will never have to wonder if he was an accident, if she has value, or if his life is worth living. We all have a purpose and a magificent one at that.
I would also encourage you all to focus on the “enjoy God forever”.
We added worship to the answer. While it could be argued that glorifying God encompasses worship, I think there is enough of a distinction to justify having both. Read A.W. Tozer and you’ll probably understand the significance.