How much do you care about grammar?

I was just thinking about grammar and how much of a big deal or a small deal it can be to different people.

When I was younger I was always trying to have good grammar because I was afraid people would know it wasn't my first language if it was bad.
But I also remember feeling annoyed at certain mistakes. However nowadays I don't care as much. I still care about proper capitalization and punctuation and I will try to get it right, but it is not a biggie if someone skips a comma or misspell one word that is easy to guess what they mean. Part of that is because I feel like nowadays I feel like I am more prone to accidentally misspell words or swap the order. For example, instead of cliff-hanger I will accidentally say Hanger-cliffs, very matter-of-fact by the way, I rarely catch myself. And it is not because English is my 2nd language I do that while speaking in Spanish too.

Anyway, how about you? Do you have different standards depending the medium or who it is addressed to?
Has the amount of care for grammar changed with the years?