Nice README and tech! I like these projects in theory and I get the technical motivation, especially in reference to similar p2p tools that rely on a centralize

Nice README and tech! I like these projects in theory and I get the technical motivation, especially in reference to similar p2p tools that rely on a centralized peering server. But I'm having trouble understanding what people use these tools for in practice. I'm betting there are good use-cases, but I haven't seen any yet that wouldn't be better served by s3, airdrop, or BitTorrent. Anyone here using pcp, croc, magic-wormhole, etc.? What are you using it for?