Well it seems ok for you to try and convert non muslims, and the person converting wont get killed for it. HOWEVER, if a muslim converts away from islam, they become an apostate, and are killed. That shows the utter hypocrisy of islam.
Islam is mainly spread by high birth rate, not conversion. In the past, people were forced to convert, nowdays only losers who are insecure or easily brainwashed convert to islam.