For the record, I have hated, or currently do hate, the following beloved celebrities from this thread:
1) Robin Williams - I used to sit there, furiously stunned, as people roared with laugher and what I perceived as the lowest level, easy hanging fruit in comedy: high energy. Robin Williams was never FUNNY funny, he just got on stage and went manic, with some impressions, and people just laughed more from the endless riffing, less from the quality of the jokes. He wasn't funny on More and Mindy, I fucking hated that show, and he wasn't funny in stand up. And don't get me started on Mrs. Doubtfire. It wasn't until Good Will Hunting that my entire perception of him changed, and after that, I began to really love him, and enjoyed him for the rest of his career. But for awhile I thought he was gaslighting the entire planet and everyone around me was drinking the kool-aid. When i told people I hated Robin Williams they looked at me like I had killed Santa.
2) Tony Hawk - I've never gotten on a skateboard in my life, but this dude has been in my pop culture orbit since I was a kid. He's always struck me as completely arrogant, douchey, and super insecure about his position at the top of a kingdom/culture that I've never liked in the first place. Must be missing something about why he means so much to so many.
3) Mr. Rogers - this one breaks my heart, but I've always found something unnervingly creepy about Fred Rogers. For the longest time, I would have bet money he had some perversion in his real life, and I know that's awful to say, but he struck me as a real creep, the kind of guy you wouldn't be surprised if they took his hard drive away one day, and found images of kids. Like if he lived in my neighborhood, I wouldn't let my kids go to his house that's for damn sure. Of course, I've watched the recent films on his life, and I've since learned he was an amazing man in a lot of ways, and the skit that's been circulating online of him washing his feet with the Black police officer to address racial segregation in the culture at the time, was truly the kind of subversive shit I love and respect. But, I still get creep vibes from him.
4) Hugh Jackman - The first comic book I ever bought was X-Men #195 which showed Wolverine holding up a small kid (a member of Power Pack). I finished that book and instantly fell in love with Logan as a character. I spent the remainder of my childhood and teenage years reading every X-men to come out, every spinoff (Wolverine limited series, Kitty Pride & Wolverine, etc.) I DREAMED of the day when they would make an X-men movie. The day they announced Jackman as Wolverine, I'll admit, i thought he looked the part - even though the costumers were a disgrace and nearly sacrilegious, I was still super excited for that first X-men movie. But I couldn't have been more disappointed in Jackman's performance. I didn't 'hate' it, but it was clear to me the dude just 'missed' something in the character. At the core of Wolverine is the berserker rage - it's the key to the character - and Jackman just didn't seem authentically capable of that kind of rage. He came close in X-2 and for a moment there I thought maybe I could live with him. But the movies were a hit, and they kept making more and more and the turned Wolvie into a song-and-dance version of the berserker. It was like Wolverine 'lite'. And the problem was Jackman was, the dude is such a perfect PR whore, he's such a worker, so good at press, so likable on set to everyone, that they never recast him! I would dream every year that he'd announce he was done with the character, and yet every year he just hung in there, grabbing that paycheck, and turning my dreams of seeing a 10 out of 10 Xmen movie, into settling for a 7 out of 10 rendition of my favorite character. I hated Jackman for a long time because of that. But then of course he made The Greatest Showman and all sins were forgiven. /s (double /s as that movie was actually pretty good).