Should you always end mysql queries with “or die?”

Question

Example queries in some tutorials ALWAYS end with:

or die(mysql_error());  

I can see why you would would sometimes want to do this, but t

Answer 1

You don't necessarily need

or die()

But you should have some kind of error handling system. If you don't have one in place yet, I would add it to my queries, even the simple ones.

EDIT: To clarify, by "it" I mean the or die() statement.