I put it to you that the exercise you really do is misleadingly named and that it is actually "what's the best that could happen, given this setback".
The worst that could happen includes losing a paying customer who then finds his business in trouble when he can't get a stable alternative, blames you, sues you under an obscure law which you didn't know of and you lose your company, job and go to jail. Or your site goes down and you can't fix it and your company sinks and your friends ostracize you and your cofounders rubbish your image publically. Or a disgruntled user hunts you down and murders you in your sleep.
You're not doing "worst that could happen", you're doing "least worst that could happen" or maybe "most likely thing that will happen" to get away from the above thinking.