[protagonist]

Reasons to have a server:

It is difficult to play with yourself offline (you can't test events that would need 1< people.)

Developers would rather join a server that is up in some form or another.

It provides you the chance to show people your work without it being stolen, and also lets people see it in action.

It lets you make sure your ideas really pan out, if you don't have working scripts you can't see if maybe you made something too easy or too hard.

It's alot more fun.