Recently, Sherlock start Martin Freeman talked about the possibility of a fifth season of the hit series. He stated that the series was 'not fun anymore', citing fan expectations being so high that the pressure to deliver took away any enjoyment in actually doing the series. The Steven Moffat and Mark Gatiss modern adaptation of Sir Arthur Conan Doyle's iconic detective became popular immediately and propelled Benedict Cumberbatch into a household name and up Freeman's profile considerably as well.
It seems that Cumberbatch doesn't necessarily agree with Freeman on his assessment. The actor was asked by The Telegraph his thoughts on Freeman's comments and he basically called them 'pathetic'.
It's pretty pathetic if that's all it takes to let you not want to take a grip of your reality. What, because of expectations? I don't know. I don't necessarily agree with that … There's a level of obsession where [the franchise] becomes [the fans'] even though we're the ones making it. But I just don't feel affected by that in the same way, I have to say.
A fifth season of the series has been talked about but seems to be a ways off if it happens at all, due to busy schedules of both Cumberbatch and Freeman. Both have become in demand since the series debut in 2010, and both have joined the Marvel Cinematic universe, with Cumberbatch playing Doctor Strange in the upcoming Avengers: Infinity War and Freeman playing Eliot Ross in Black Panther.