And THERE is the reason it is important to learn scouting skills.
If you are always just following someone else's lead, always just bombing down a run, then you are not learning critical skills. If (as mentioned in other replies) you cannot recognize your chosen line once you have gotten in your boat, if you feel it 'breaks your rhythm' or you 'lose your mojo', then you are an accident waiting to happen. It is only a matter of time before fate will catch up with you to teach you a tough lesson. Sh** happens (sooner and more predictably) to people who are too nonchalant and too cavalier to take the reasonable and prudent steps to do their best to prevent it! Not scouting a drop (that you don't know, that you can't see the end of, that you can't see the next 'safe point', ...) is NOT doing what is reasonable and prudent to minimize risk or likelihood of (minor or major) disaster.