Definitely overnights, but also long distance. Ultralight only makes sense once you get into long distance trails IMO.

I’ll happily carry 10-15lbs on a casual weekend with some friends, but when I did the PCT my baseweight was down to 6lbs once I passed the Sierra.

Turns out if all you do is hike all day, for months at a time, you really start thinking about pack weight.

To each their own I guess... I carried a 4 lb banjo on the Camino de Santiago and it was hands down the best thing in my pack :-)