Quote Originally Posted by Dogwood View Post
"I have different packs(kits, jacket, et) for different types of trips. From fast and light weekends, to a week in the rain, to extended stay in harsh winter conditions."

Couldn't have said it better than Cadenza or Tipi. Different trips, different adventuring/backpacking activities/philosophies/locations where the trips involve extremes like mountaineering, climbing, above treeline exposed traverses, extreme adventuring, remote routes/trails, off season/non fair season/FOUL weather/highly mixed conditions, etc. may require greater or different kit considerations. Not everyone limits their adventures to maintained or frequently traveled highly sociable trails in fair weather with umpteen road crossings, regular pre layed out shelters, endless documentation/signage/blazing/written guides/etc, or with likely assistance close at hand nor does everyone wish to regularly splurge for gear that is prone to breaking down. Mind you all that comes from one with a typical UL mindset.
Thats all great. And can be done with one pack.