I buy stuff as a replacement only when something is broke or torn. I have 5 backpacks
- winter overnight (had it for 10 years), 55L
- cragging pack, which could double as a hut overnight in a pinch (9 years), 45L
- summer day pack (20L), replaceable, as lasts only a season or two,
- multipitch climbing day pack (20L+), on 2nd season now
- 30L ski backpack (6 years?).
Also have a laptop bag that was repurposed from a BD ski backpack. Looking to sell another new ski pack that I bought as a replacement, but never liked it.
I have 1 big down puffy (previous lasted almost 10 years) and a mini-puffy (new, REI brand), previous lasted couple seasons, but I lived in it.
1 helmet that doubles for everything- climbing and skiing.
2 tents (winter & summer) and 3 sleeping bags (getting on 10 year old, probably would need an upgrade soon).
3 pairs of skis (one 10 years old resort pair), one replacement (since they stopped making that ski a while back) and 1 backcountry setup. I do need new BC ski boots though (current pair lasted 4 seasons), and that's a big purchase.
Small problem with climbing shoes - 5 pairs! (Voo shoe, thin crack shoe, slab shoe, sport shoe and trad shoe). All last multiple seasons, except TC Pros, which I use the most.
Currently I am on a climbing pants buying spree, as I managed to tear holes over the summer in all of them
, and the fall climbing season is here!