If you are happy with your beliefs, why not be happy? If no one asks about your beliefs, why do you insist on lecturing others?
If you have to tell others why they are wrong, it is you who are wrong.
Example. There are beer styles I like that a lot of people do not like. I don't go around telling them they are wrong. I can enjoy something without annoying others with my beliefs.
The second thing which is extremely arrogant, is to say that if you don't convert you are immoral.
Why? Because they're stupid.