Long-term sharing breaks down when one person feels they are contributing more than another. For low-price household items like toilet paper, soap, etc, and com

Long-term sharing breaks down when one person feels they are contributing more than another. For low-price household items like toilet paper, soap, etc, and common kitchen items like olive oil, flour, etc, we all still pitch in to a fixed "house fund" since it takes more time to split it evenly. But for everyday quantity-based items, it has helped us all stop over-purchasing and throwing out as much fresh produce, and any roommate can opt-in to share as much/as little as they want.