I believe God speaks to us (or we hear and/or feel God) in our own language according to our own understanding. I believe Christianity (and Buddhism and Islam and Shintoism and Judaism ad infinitum) are necessary simply because they are expressions of what has resonated with millions of people. They are inevitable. They simply "are". (Just like my favorite name for God: "I AM".)
Fighting the inevitable is something I've chosen not to do. Rather, I construct my own view of God within the broad parameters of what resonates for me (Christianity) - and the saving grace of Mormonism is that I am able to incorporate ANY good I find ANYWHERE into what I view as pure Mormonism.
I like something from Buddhism? I want to think of Nirvana as an expression of the Celestial Kingdom? Fine.
I want to view Mother Theresa as a model of love and a saint in every sense of the word and picture meeting her in Heaven? Fine.
I want to disregard some of the best efforts of former prophets in any religion (anciently and in modern times) to make sense of the world around them? Fine.
I want to share many common beliefs with those who worship with me weekly but have many unique ones? Fine.
Mormonism allows that, even if some members and congregations fight it.
To me, that is "the basics" - that I personally must work out my own understanding of salvation and exaltation and exercise faith that God will not punish me for my best efforts.