Everyone can believe on what ever they wish, it is their choice. However the people with new found faith are more vigorous to prove about their new faith more so to themselves than to others. To prove that they did the right thing they are always repeating their change in faith like a broken record. I have nothing against anyone who changes their faith, however trying to change faith of others is disgusting as they are asking to change some-one's faith to their new faith, in which faith they are trying to "feel good" about their decision of change in faith, nothing more (usually).