It is important for both guy and girl to choose their partner carefully. This stage determines how strong your relationship will be. If you make mistake in this stage then your relationship will not last long. The only thing that you get in return is grief.
See an example below what happens if you did not choose the right partner. The picture seems funny but the consequences could be worst than this.
Ability to take a quick decision is great, but in relationship, you have to take your time before you take any serious steps.