It’s a solid store of value. One can borrow against that held BTC, and as it appreciates over time, the loan-to-value ratio improves, without having to do anything. Also avoids capital gains taxes since you're not spending it.
Bitcoin is the world's number one store of value for converting young, impressionable men's wages into thin air and moving those dollars to other people instead.
It's a compelling rival to multi-level marketing for women in that both prospects entice low-socioeconomic standing peoples into thinking they are building value instead of consuming it.