Definitely keep going! The writers want you to loathe (and laugh at) Jeff at this point -- he slowly becomes a more worthwhile person as the series goes on, but still definitely flawed. The real joy of the show is the other characters, though (except for Pierce). Sometimes it comes across as a true ensemble show with each character getting their turn for attention, and sometimes it gets sort of stuck on Jeff & Britta, but overall it is totally worth it.