I don’t care how immature or nerdy it may seem; everyone needs to invest in his or her childhood once in a while. Revisit old cartoons, movies, video games, board games, books, and destinations. Spend money on the things you loved as a child. I just purchased the new Legend of Zelda; after nearly two years devoid of video games, I look forward to burning a good 50 hours on it. Why revisit your childhood? It’s a grounding experience. Through nostalgia, you refresh core values and trace your steps. You come to appreciate who you are and where you came from. It’s important for building identity. It’s important for building the soul.
Do not hesitate to buy and enjoy that childhood classic. Screw the person who tells you to grow up.