Held each September 24 it makes note of punctuation in the name of legible writing.
Back in the old cursive days of primary and secondary school I was known for failure to dot an i or cross a t but this improved over time.
Later, I went through my 'flourish phase' where I would embellish all my writing with various doodads until I reached the "utility phase" where I got in there and got out. No muss. No fuss. I have always received compliments for my handwriting and I am told it is very legible.
I am in the habit nowadays of leaving out a number of period characters as a matter of course. I just don't see the need for all those periods.
I suppose the biggest impact that punctuation has had upon me is while coding. It's easy to misplace or transpose various characters and then you end up with some great 'bug' which must then be eliminated. Luckily I enjoy coding and more so debugging MY code. Though I do less of it sometimes a need arises suddenly and I am glad I can take care of business.
Happy National Punctuation Day you wordsmith you !