The one thing I noticed when I was focusing on learning to write is that it helped me a lot with differentiating between similar characters when reading. I forget which ones now, but there are many characters that differ by a single radical and have similar meanings, knowing how to write each one helped me quite a bit there, but overall I rarely write anything other than my name and address now that I live in Japan.
Even if you cannot recall and have to type in your phone first (as natives do often for unusual ones), at least you can write it much faster because you are not just copying.
I think it’s useful to do RTK with SSR and, once you finishes, you only need about 15 min of maintenance per day to keep it in memory.
