Atheists: Quick, stupid questions

[Jaguar101]

Is the world going to end - No intelligent life forms on it?

If so, you and everyone else are going to die. What is the point of bettering yourself if this is going to be the case? i.e. working long hours, overtime, worrying about financial problems, marriage, kids.

Why worry if everything is just going to end anyway? And if some of you say you don't worry, how can you choose not worry about those things, is that possible?

Simple and stupid questions I know, serious though.