While I naturally want the UI to look nice as a designer, I'd personally have no issues shipping a prototype/MVP using a framework like Bootstrap. What I won't

While I naturally want the UI to look nice as a designer, I'd personally have no issues shipping a prototype/MVP using a framework like Bootstrap. What I won't stand for is when a product being an "MVP" is an excuse for shipping code that hasn't been tested properly and/or has no thought to the UX. Craigslist may look like 1995 but it still does a better job than any direct competitor out there.