Hmmmm . . . .
Many of the anchorages we visit are often quite crowded and sometimes the holding is not great. Getting a boat to sit in the right spot without swinging onto others is not always easy and when sailing in, it is more tricky.
For example, you sail in between two boats with another boat 100yds astern - the anchor drags and the wind drifts you back onto the boat behind. How well does your boat handle under sail in reverse? I'll bet not as well as you think. A drifting boat gobbles up 100 yds in a very short time.
And if you do manage to get the boat turned in time, how quickly does it begin to make way under sail? And if you're like a goodly percentage of visitors to this forum, your engine may not start all that well not least because as a purist you haven't used it for a while. Right?
In addition, many (most) anchorages are in a bay or inlet of some sort where surrounding elements (trees, cliffs, buildings) will cause unexpected wind eddies and that could compromise your efforts at doing this without touching other boats.
The wind is often light enough to sail with some confidence into a crowded space but then it is perhaps too light to set the anchor properly and at 03:00AM someone else is going to have you leaning against them when the wind does fill in a little. Please God, don't let it be me!!
And remember also that if you have to move at 03:00AM, you're technically the last boat into the anchorage and you have to give space to everyone else there, even those that came in many hours after you did.
So I get the "purist" thing about "I'm a sailor" but I often see guys coming in under sail and in my nervousness I wonder "What is the down side to motoring in?" And this is even more intriguing for those who sail in with the motor idling
I motor into an anchorage, I set my anchor properly and that's where I'm spending the night. Nobody around me will have any cause to be nervous. Those purists who get it wrong and drag onto me in the middle of the night will be moving and it probably won't be under sail.
But that's just me . . . .
Just a question: What sails would you have up to sail into an anchorage?