"I would, however, like to hear some more perspective from people who shop exclusively domestic, since I'm sure they're out there (and on this forum)".
Are you referring to backpacking gear or in all aspects of life? I'm not exclusive but my pack, bag, pad, tent, stakes, down jkt, and filter are US made. The stove I use most is MYOG as is my poncho, wind jkt, stuff sacks, knife sheath, sun hat, chaps. My base/wicking layers are primarily thrift store finds…mostly made abroad, I'm guessing. My other stove and Ti pot and spork are Japanese…I have a Swiss made filter, Spanish knife, Canadian pants, and Chinese shoes and poles. I'm sure I'm missing stuff. The irony is that most of the materials the US stuff is made from is likely from abroad.
Re your other post, good on you for having no car. That takes some real commitment! I don't have it. I'm still driving a Mazda truck I purchased new in 87…and have a 95 VW van for traveling (58 mph). I use the truck for hauling salvaged wood and such. Locally, I walk and ride my bicycle a lot…for grocery runs, etc. I have a dual-sport motorcycle (73 mpg) for longer distance errands and getting to some remote trail-heads.
While I'm at it, suppose I should put-up or shut-up too. For a general snapshot: I compost everything that's biodegradable (recently featured in local paper) and use a scythe instead of a gas mower and trimmer. Except for a few of the nuts we consume, everything else my family of 3 eats is 100% organically grown. We belong to a local CSA and grow a lot of our own. On less than 1/4 acre, I have 50+ fruit trees and berry bushes and countless wild edibles in addition to more conventional veggies. We store food by canning and dehydrating. Our landscape is an edible forest garden also cooling our home (no AC) with 1/4 of it watered with a greywater system. I flush my toilet w/ my shower water and pee in my compost and yard at every chance. I use rainwater harvesting techniques via small earthworks and heat our home w/ 100% salvaged wood slated for the landfill. Built my shop w/ 60% salvaged materials, make my own paints/finishes from natural materials, and volunteer at the local college and grade school teaching primitive skills and wild plant identification. I blend in life lessons and awareness at every chance! Most of my families clothes come from thrift stores. We own everything…house, cars, land. Have no debt. Buy little. Recycle. Pull valuables from dumpsters. Share excess food. Live simply. I try for "right lively hood" by doing Permaculture consulting…teaching others how to compost, design for passive solar heating/natural building, use greywater, make natural finishes, grow food, etc. I make little money. I write every chance I get in various mediums, about food, chemicals and general clean living advocacy… planting seeds…have a FB page and website w/ links, how-to's, etc, etc.
I could go on but don't wanna be an ostentatious bore. I do think these threads are important for discussion though. I'm far from perfect but try to bring awareness and lead by example more than anything. Looking forward to warmer temps, flowing waters, and snow-free trails. Peace!