The Setup That Never Ends You have the idea. You've validated it — at least enough to start building. You open your terminal, scaffold a new project, and start with what seems obvious: authentication. Three days later, you're knee-deep in JWT configuration, session management edge cases, and an email verification flow that still doesn't work right in Safari. The actual product? Not a single line written. This is the trap most developers fall into. Not because they're unproductive — they're often extremely capable — but because building a SaaS product from scratch means solving the same solved problems that thousands of other developers have already solved before you. Every hour spent wiring up Stripe webhooks or configuring protected routes is an hour not spent on the feature that makes your product worth paying for.…