NormH3: I'm just trying to understand the mentality.
Personally, time and frustration level are the key factors to my decision. If I'm at a point during the round where I'm playing bad, or have been dealt more than my share of wtf moments (read: deviations or meter glitches) I find it better for me to drop it, go get a drink, cool off, re-group and try again. 90% of the time I will shoot better in the next round. Or if I know I only have a certain amount of (personal) time to play I can usually maximize my take by dropping a so-so round and trying one more time in different conditions.
There are also other times, when things aren't going my way, I'll just monkey around for the rest of the round practicing different shots, usually taking the maximum on each of the rest of the holes. And no... with the exception of 1 round (a 98) I will not post that score, so not to be accused of 'falsely inflating my average'.
*edit* please note that this does not represent my mentality when playing with others in a round. I will always finish, there was a time in the past when I'd play to the last hole and drop, but not any more. As for people disconnecting on me, I don't care one way or the other, it actually has benefited me (see monkey point above)
*edit #2* other times I'll just go hunting (see here).... haven't found him yet...