Even you crusing at 10-15 kts at times is relatively slow. Compare a car, Train, Plane. I like the saying; "Nothing goes to windward like a 747! And of course what is too long? Other cruising friends stay a day or 5 in a place then leave. Have heard of some cruisers that have been out 30 years and not circumnavigated yet. To long for me. We tend to get tired of a place afer a couple of months.

Go Slow
Sail Far
Stay Long