I like British humor. I prefer it. Just not Ricky Gervais' version.
If someone says "Are you having a go at me?"--are they asking if you are making fun of them? That is how I perceived it but it might be more than that. Just curious.
Where would Seinfeld fit in? None of the characters are particularly redeemable and the characters take a piss at each other all the time, and yet it was one of the most successful American comedies out there.
FX has a show called "It's Always Sunny in Philadelphia" and it can get pretty racy and mean-spirited and the characters are all spiteful underdogs with no hope of actually getting ahead. Of course, as a basic cable show, it can get by with a smaller target audience.
I let each show stand on its own merits. I don't categorically prefer one type of humor to another. There are times when I crave optimism, and times when I feel like indulging my dark side. Stupid-funny can be fun, or it can be just well, stupid.