Mormons want to convert people so they can live in the Celestrial Kingdom or the highest kingdom. To enter into the Celestrial Kingdom you have to be baptized and be married in the temple.

Annelise, there are obviously questions that lead to more questions, and I just wanted to add a little more to the last response. We believe that there are 3 different degrees to heaven. (from lowest to highest) Telestial, Terrestrial, Celestial. (Not Celestrial. : ) ) Of course those who are good God fearing people will be able to go to heaven, but there are more requirements to be qualified to attain the Celestial Kingdom. To attain the Celestial, like was said above, you have to be baptized, and recieve certian ordinances which are given inside our Temples. One of those is \"Marriage for time and all eternity\" with your spouse. But just because you do those things doesn\'t guarantee you a one-way ticket. You still have to be faithful in keeping the commandments and keep pushing through all the way to the end. Now we don\'t know who will go to where, (Only God is the Judge of that) but we have been told what is required to attain the Celestial.

"We believe that there are 3 different degrees to heaven." 
 
Where can that be found in the Bible?

The best reference to this is found in 1st Corinthians 15:40-42. Also reference is made to it in John 14:2.

Because we want to help people be in the same level as us like there is three kind of sections in Heaven, and we want to help people. Like if you saw a person on the sreet that was homeless, you would help them because you don't like to see people like that, thats the way we are with trying to convert others to mormonism. Thats how i would explain it.

We try to convert other Christians to complete the gospel of Jesus Christ.The book of Mormon is not a different or stand alone \"Mormon Bible\" it is the \"Book of Mormon Another Testament of Jesus Christ\". 
There is more revelation given to a modern day prophet that we want to share the joy of that new revelation just like christians want to share the New Testament with non beleivers. The World is ever changing, don\'t you think God wants to give us new information to help lead us through this life? I do. Amen.