Because we PUBLISH the stuff and do not have to 'preach' it.
Oh yeah...
Our missionaries will come to your door and tell you all churchs but LDS are wrong. They are not 'preaching', but proclaiming.
--MormonDude(When would be a good time for a couple of our highly trained young folk to stop by your home to help you understand the error of your ways?)
The sooner the better.