Reminds me of real people I've actually spoken to who've said crap like "why should I bother starting to watch [show] if it's been cancelled?" as if the only way something can be good is if it somehow continues forever.
^If anything I'm more interested in shows that have already ended, because I much more enjoy having a complete experience I can go through on my own time rather than being strung along for years waiting on drip-fed episodes.