I was thinking about this thread today. My dad was an English teacher, and in his case this meant he was also the grammar, spelling, and handwriting police throughout my childhood. Picture me, six years old, bringing him my kindergarten homework, and he responds by getting out his red pen and closing the loop of my printed lower-case A because two millimeters were left open. This continued all through junior high and even some into high school.
My dad doesn't get to read my stories. He's never asked, but he knows I let my mom (married, same household) read them, and sometimes she and I end up discussing them in front of him. (I try not to, but sometimes it happens.) Occasionally I've thought of letting him read them. But I know he would criticize them. I know he would get out his red pen and add in/cross out commas, circle typos, mark my sentences he thought were too long. (The stories would almost certainly be typed at this point, so at least he wouldn't be able to "fix" my handwriting!) I know that this would be his way of showing that he was engaged with my stories, that he was paying attention to them. But it would upset me. Even if he said, "This was very good," all I would see are the red marks he felt compelled to put on it.
Okay, not to make it all about MEEEE... But after I posted this and people responded, I got to thinking about it more. I said to my mom, "Do you think Dad would like to read my stories?" and she's like, "Of course!" I said, "I'm just afraid he'll get out his red pen and make corrections," and she said, "Well, tell him not to." Well that sounds... simple.
So tonight I saw him and I casually said, "I wrote some stories in fandom XYZ... Maybe you'd like to read them sometime." And he got all excited and said, "Yes, I would!" Then I said, "But you couldn't point out typos or fix the grammar or say ANYTHING BAD AT ALL about them." And the whole time I'm speaking, he's shaking his head, like, no, of course not! Then I changed the subject to something else, just in case we were about to have a Moment... Gotta avoid those.
So, we'll see. I don't want to lean either way on it yet. But I offered, I told him the conditions, and he agreed immediately without hesitation or defensiveness. So I don't know, maybe I was just building this whole thing up in my mind.