I’ve come to really hate sentences that begin with “If only.”
Did you like the movie? “Yes. If only it had been a little shorter!” Did you enjoy the book? “Yes. If only there hadn’t been a typo on page 56!” Did you have a nice vacation? “Yes. If only it hadn’t been so hot!”
It doesn’t bother me when people complain about the bad times, but it really upsets me when they complain about the good ones.