I just don't get Archer.
None of the characters are likable. I think the animation is stiff and ugly. And all the humor just falls flat for me (which I think is at least partially due to the animation not being expressive enough, imo). People have explained to me the reasons why they like it, but I just... don't see it, I'm sorry.
Also, The Big Bang Theory isn't that bad. I mean, it's not a masterpiece or anything, but it's far from the worst that TV has to offer. I don't follow the show closely, but I'll put it on every once in a while if I'm bored and I see that they're airing reruns. It has flaws, but it's entertaining enough to kill time with.