If my DH were a minimalist he'd definitely be a bandit purger. But I could never, ever be. We have all the kids' stuff in our garage, and I have actually retrieved stuff of theirs from the curb that he put out there on garbage day. I think it's really disrespectful to throw out someone's stuff without asking them first. And my kids have even given me permission to get rid of the stuff! They don't even know what's in there, and they've been out of the house for 10 years+! I will almost definitely have a change of heart when I go to sell the house, though.
BUT, I think a mom has the right to purge clothes from a six year old's closet, unless the child has a particular item of clothing that they love.