I've never met a fly caster who could cast over 100ft that wasn't a pretty damn good caster all around. Show me someone who casts that far and i'll show you a good caster. At the very least he'll be well above average. Given all that, yes Its NOT important to be able to cast that far, but if you do, a 40ft cast into a 30mph gust of wind is a breeze. No pun internded.