As a Fed fan, I'm contented. Roger cannot defeat father time. His skills have eroded - that forehand isn't the weapon it once was, he still moves well but not as well..., he's not as clutch (many old retired pros have said it was harder at the end in the big moments because they knew the window of opportunity was limited) and he's not as explosive. He has made various changes over the last few years to remain relevant with scheduling, racquet changes, backhand, net game... but there are only so many times you can go back to the well. Once upon a time, it was big news when Roger lost a set.
Federer will always remain relevant until he retires, but he's now human. Not a lot's going to change that at this stage.