If you're wondering if you should be watching it, you're already too late my friend. Its not only the best Sitcom in my opinion but also stands out from all the other shows in many aspects.
Firstly, its not you regular sitcom, its a mockumentary which makes it one different than almost every other show of its genre.
The humor is on point, mostly satirical take on common issues with its heart warming set of characters.
People often judge the show on the basis of first few episodes itself. But trust me, once you get beyond Season 1, it just gets better with every season!
Honestly I usually write much more than this for a review, but I'm literally running out of words to describe how good this show is.
And yes, its better than Friends if that's what you were looking for.