No.

In fact, I would suggest you to do some research on how light behaves and get to know a few kinds of lights (soft light, hard light, source of light, etc). The types of lights are just like the media you used to paint. If you used the wrong tool, then the result definitely doesn't work the way you want it to be.

The forumers here mentioned that the outcome is too obvious is the flash is used, and this happens probably due to the flash doesn't jive with the ambient (surrounding light) making the photo look like there are 2 kinds of light and uneasy to the viewer.