I use both quite often. The apostrophe from a young age and the em-dash from my locally hosted alternative to grammarly which auto-corrects for me - making it easy to use as it doesn’t exist on my keyboard as a built-in. If it existed on my keyboard, I would use it by default.

(Noticeably absent is the em-dash in this message because my grammarly alternative is a chrome extension and I’m currently responding from my mobile device that does not have it.)

I use em dashes—chiefly to express parenthetical thoughts—all the time. Sadly, there’s no foolproof system for identifying machine-generated text. Happily, it means one less thing to worry about.

I often use ’ and –. What's wrong with that?

Correct punctuation marks, you mean?

Humans use them too, you know. I've used the em dash (—) and opening/closing single quote characters (‘’) ever since I read Butterick's Practical Typography.