About

We use it for :

• thought and feeling (I think, I like, …)
• states, things staying the same, facts and things that are true for a long time (We live quite near)
• repeated actions without an ending (We come here every week)

And also :

• in phrase like : I promise, I agree
• in a negative question with WHY to make a suggestion (Why don't we go out ?)

See also: English - Tense

Articles Related

Do Form in negatives and questions

Example :

• We don't live for away
• Do you live here ?

Documentation / Reference

• wiki/Simple present