Question About Being Excited?

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Getting Exited is, often times, a BAD thing.. 

Can anyone tell me why and in which situations  getting excited is a bad thing.  Getting excited is sometimes a bad thing in a good situation. Can anyone give me an example of that.  Post your answers in the comment  section. You can post your answers anonymously, if you wish.

Here's a clue why excitement is, often times, a BAD thing.

Excitement is usually a reaction to something, not a response. Excited reactions can cause you to come to false conclusions which if, act upon, can lead to disastrous consequences. Can anyone
give me an example of being excited leading to disastrous consequences besides the times when being sexually excited has led to disastrous consequences. 

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