Okay, so i think it's a quite good sitcom, they planned it to be the third generation of "Friends" sitcom. So the first generation was "Friends" itself, it was a very great success, and the second was "How I Met Your Mother" it was a big success as their upper generation, the third comes out in 2014, it's "Friend With Better Lives" it's a big deal for CBS to continue their success for 'plagiarizing' "Friends", it's very clear, because the three of it tell the story 'bout a group of friends!
Look carefully, both Joey in Friend and Barney in HIMYM are womanizer and in FWBL Kate is a manizer and many character are slighty the same. So it's an unsucces series in the generation, because maybe people think it's boring or somewhat. The rating is not increasing, so they think they should stop the sitcom.
I feel so sorry about you FWBL fans. NB : I didn't mean to mock Friends, HIMYM, or FWBL