Same as playing the lottery.

Also, just because it's a solo miner, doesn't mean it's not a farm with huge hash power. 

Every serious Bitcoiner should home mine, but most should join a pool like  nostr:npub1qtvl2em0llpnnllffhat8zltugwwz97x79gfmxfz4qk52n6zpk3qq87dze

Bitaxe is a great piece of kit for home mining.