Can't stand either.
If sitcoms' were so good, why the 'canned' laughter? American 'humour' is deplorable, & plain downright stupid. Nothing funny going on there, ever.
Too many of the 'stand-up' ones' descend into smut, innuendo, & swear way too much, to the point they're not even funny. They're just cheap & common. And people PAY to see them! Pfffft!
I agree with you about stand up, but not about comedies. The laughter reel is actually often genuine laughter by a studio audience watching the show being filmed. I find the laughter reel makes sitcoms funnier (laughter is infectious), and when there is no laughter, a sitcom can sometimes feel stilted.