Ah nice! I'm glad you're still doing some regular exercise/practice. I learned a bit of aikido when I was young too, and more recently have had some very nice 1:1 instruction in shotokan from a VERY experienced practitioner. I can see how mastering even just one or two kata can be a valuable practice throughout one's life, outside of the self-defense benefits. I like that there's always more to learn, and greater subtlety to understand and ingest. Very rewarding and mentally/spiritually powerful. (not to mention great exercise haha)