The Islam is most rapidly growing religion.The non Muslims convert to Sunni version of Islam more than Shia Islam.
Definitely these coverting people don't have grudge with Shia Islam as some ignorant may think.
As Shia believe their version is true and more logical then most of non Muslim should convert to Shia Islam.
But in reality they convert to Sunni version.
@notme @Sirius_Bright @Anonymous @ShiaMan14