The title of your paper is one of your only chances to get people interested in actually reading your paper.
Also, many will just look at the title of your papers in your CV, as well as the journal they are published in when you are applying to places. You don't want to give the impression that you are a boring and dull person, do you?
It is better if you ask your friends when deciding on a title. Make some alternatives, consider their relative merits and discuss them with others.