I have of course no idea if Watterson is capable of producing a new work of the same quality, and neither have you I presume. Some artists are one-hit wonders, but Watterson have on a daily basis produced original work of consistently high quality for a decade. This is far more than can be expected by any artist in any media.
In any case it speaks to the strength of his work that you hope for more, but it is disingenuous to call him selfish or a hypocrite because of this.
In any case it speaks to the strength of his work that you hope for more, but it is disingenuous to call him selfish or a hypocrite because of this.