I went to Japan with my family on a trip and realized that I could read many of the characters (because I read Chinese) but I couldn't speak.
After coming back from that trip, I really wanted to go back regularly with my family. My kids started getting into Japanese anime like One Punch Man, Demon Slayer and started playing a Pokemon. They started with some Japanese lessons on italki.
I figured it would be a great common hobby to have with my children... learning a new language together.
It's been about a year now and I've really enjoyed learning Japanese. So much great content on YouTube, Netflix and on the internet too!