Worse is better
Or, to put it a bit more optimistically - usable now is better than perfect later. I've found that, if I disappear behind a curtain and spend a long time trying to make something really well-polished and feature rich, that just gives the user a lot of time to build up their expectations, and also to get frustrated by the delay. By the time you ship, they'll be actively looking for ways to find fault. When I YAGNI my way into a 80% or 90% solution and turn it around quickly, though, more often than not, they'll initially just be impressed at how quickly I was able to help them. Requests for changes will come, but they're generally small, so it's usually relatively easy to turn those around quickly as well.