I used to enjoy the show, back in the earlier seasons. I've never thought of the show as funny though. A lot of it comes off as "thats supposed to be funny, because it's outrageous" when something happens. Like I know a lot of people think Barney is the funniest character ever, but a lot of the stuff he does is just "its funny because its so stupid, and nobody would do that IRL".
And yeah, this show has been going on a bit too long as well. At least in the earlier seasons there would be times where I giggled, because it had some comedy, but the last couple of seasons have just been really dull. I haven't seen all episodes, but I tend to see it on TV fairly often, since they show it a lot here.