Wips and Patreon money

I know some people aren't going to like this, but why are authors putting up Patreon accounts if they will never finish their story? I've been looking at some authors who have spent three to four years without finishing, but are still taking people's money. If you feel drained or uncomfortable writing, why take others' money and then leave the story abandoned? And if you want to waste money on short stories or sneak peeks and small updates for $10, that's fine, but waiting three to four years for the full story is wild.