Well, it is sad that this teenager looks at the bad of Christianity and not God in it~
I will say, there are self righteous and judgmental Christians.
Those I speak of are not only behaving this way toward unbelievers but other Christians as well.
Some have lost the focus of what being a Christian really is.
To turn from it though because of others' behavior is a cop out.
And I am ONLY referring to the teen in the original post.
There are the bad and the good in every religion.
I wonder if this same teen stopped listening to music because some is violent, or stopped watching movies become some are sexually perverted, or stopped eating because there are many people who abuse that too, becoming gluttonous and injuring their health, dying, raising medical costs.........
We can find ANY excuse we want to avoid God, Christ, Christianity.............
Also, God is ALL about love.
We can show Christ's love without accepting a person's lifestyle.
Yes, many Christians do mistreat unbelievers, I have seen it!
And as Ban pointed out, mistreat other believers too.
Christ's existence was and is for the sinners!
We all need to refocus our walk, daily.
Are we really trying to help the gay person, the druggie, the alcoholic, the rude neighbor, etc. find Christ or do we avoid them instead thinking only of our own salvation?