The thought process going back to when the sport was informal (without a written rule book) was that it shouldn't take a player (or worded another way, "the expectation was") maybe ten seconds, 15 at the most to make your throw. Now remember most courses were very similar and there weren't bags with 20+ discs in them back then; there in fact was very little choice of discs either. [...]
The people playing "back in the day" thought 10-15 seconds was enough, so when they went to make a written rule book, they actually padded the time with the thought, that, "if we make it 30 seconds, we should never have a hassle over time because no one takes more than 10-15 seconds now."
So my thought process today is "How's that working for us?"