Share 'Prayer: When God seems to say "No" (Matthew 6:7-8)'

I've just read an article by John Godson in Lausanne World Pulse online magazine called "Persevering Prayer". In the article, Godson sites five Bible passages talking about how we should pray and not give up: Luke 18:1-8, Genesis 32:24-28, Mark 10:46-52, Matthew 15:22-28, Luke 11:5-8. My question is this, Why do you think this kind of praying pleases God? Why doesn't this bother him (like nagg...