RCurtis,
Sebonack, NGLA and a number of course begin with rather benign starts and finishes.
I tend to agree with John Percival as to the motivation and disagree with Adrian, as I don't think the land dictates anything.
It may provide architectural incentives, but it doesn't dictate.
One's introduction to a golf course often sets the mood for the golfer, and sometimes that mood is set prior to teeing off, by the golfer's perception of the initial challenge he faces.
From my perspective I like an 18th hole where you can't limp in and preserve your game/score/match, but not one where making par is unlikely.
I like the first holes at NGLA, GCGC, Seminole, Shinnecock, Westhampton, Southampton, Fenway, Baltusrol Upper and Lower and almost every course that begins with a par 5