Patrick,
I think your competitive stripes are showing, and that your experience as a primarily competitive golfer is painting your view on this one.
You equate golf shots to things like betting $10000 dollars on a shot or having a life-threatening illness, but the fact is that not all golfers are that emotionally tied to their score, especially the vast number of recreational golfers who don't compete. Hitting a golf shot is just not
that important for a great number of golfers.
If it were, then you'd be right, and experimentation, options and the rest would go out the window.
Of course if the stakes go high enough, the player will discard all options but the one he is most comfortable with. If I have a one-shot lead on the 18th at Augusta National, that would not be the time I would explore the option of the low running draw up the front-right opening of the green. I think I'd go with my bread-and-butter shot, the one I have the best chance of pulling off.
But even though you may carry the mentality of fighting for every shot and shooting the lowest you can every round, many golfers don't. Heck, many PGA Tour players don't.
You said it yourself:
On the other hand, I've always been an aggresive player and prone to try shots that might be a cut above my abilities.
In this regard, concentration, determination and a superior ability to recover via a lob wedge were factors. But, when playing in an important match, or tournament, those choices may have been eliminated.
It appears to me that as the stakes get higher, you become more reluctant to consider different options of play, which I can agree is a tendency of many golfers. But you can't extend that to everyone else, because the fact is that many golfers (especially those who don't compete) just don't play golf that way. They'll continue to take the same risks, to try shots beyond their abilities, exercise their perceived options.
You said:
An option, by definition connotes a reasonable ability to succeed with your choice, and if you have no, or an infinitesimal chance of succeeding, no viable option exists.
If this is true, then how do you explain the multitude of golfers (including yourself, from the quote above) who attempt shots beyond the range of their abilities? What are they doing, if not exercising an option? Are you going to go up to the guy who just chose a shot he couldn't pull off and say, "That wasn't an option!" Well, obviously it was--he just took it!