The main issue with undiagnosed ADHD is, that people assume they can solve your issues with ideas don't work for people with ADHD.

So, your life is sprinkled with unhelpful people that mean well but think you're just not listening to them.

And you yourself think, your too dumb or lazy or whatever to get things done consistently.

The you find out it's ADHD and you learn different methods to get things done. Which is nice.

But it's also very sad if that happens years after childhood. Because you realise, you might had a more successful life if you knew earlier

> A diagnosis did not alter my thinking in this regard whatsoever.

YMMV, maybe other individuals need confirmation/closure on the topic in their lives to help them move onto the next chapter? Knowledge is power.

(Post-comment reflection: this is needed in a lot of other aspects in life, why not here as well?)

Other humans brains work differently than yours. What didn’t work for you did work for them.