Punington: In my opinion, the length of a game isn't a direct indicator of quality or enjoyment. So when it comes to optimising money spent, for me it all comes down to buying games which respect my time, mean/could mean something for me, are fun to play, and have a certain potential for emotional resonance.
I think that judging games for how long they are is a bit silly, and unfortunately this sort of metric for quantifying enjoyment is nowadays relatively ubiquitous around the internet.
Cavalary: I always consider length as an important factor, and that also goes for books or music albums for example. The quality of the content is of course crucial, it must be good, but the amount is also there, and something that's short doesn't seem to really... count, doesn't offer enough time to settle into the experience, if you want to put it one way. For that reason, I'd have problems calling anything short, or for that matter not long, as excellent, but assuming I would identify something like that, would likely still prefer long and "just" good over short but supposedly excellent. Even more so when it comes to actually paying for it, or otherwise making some noticeable effort to obtain it.
I know I'm a bit (a lot) late for this but I just realised that either I didn't post my reply or my reply didn't get posted. So sorry so much, I didn't mean to ignore the comment, here's my clumsy attempt at remembering what I was on about:
Yours is an interesting perspective to me because on my previous comment I remember almost mentioning books an other art forms as a way to reinforce my point so... I guess we have completely opposite views on this matter. Maybe we should duel on top of a hill someday at the break of dawn.
Just kidding. At the end of the day I find it difficult to wrap my head around correlating quantity with quality but I'd be disingenuous of me to assume that I'm right when talking about subjectivity. I wouldn't want to entangle my feet with this tangent but maybe there's a cultural aspect to it that I find difficult to understand (as an example, certain Asian cultures find pleasure in eating surrounded by food which ultimately they will only partially consume). Maybe the same cultural phenomena could apply to videogames as well. Even if length doesn't directly equate to quality, enjoyment, or finishing the game, it seemingly correlates to a certain increase in sales figures and it might influence how people think of a given game or how they enjoy it. But maybe I'm wrong, this is just me trying to understand someone else's perspective through quick assumptions and food parallelisms.
Apologies for the delay once again, I wanted to reply nonetheless as your comment made me question my assumptions, and that's always a nice thing to do. Cheers!