Matthew 15:13
He replied, "Every plant that my heavenly Father has not planted will be pulled up by the roots. Leave them; they are blind guides. If a blind man leads a blind man, both will fall into a pit."
As Christians we aren't suppose to feel comfortable. If you're comfortable, it's time to let go and open your eyes to what's going on around you. Don't get so comfortable in your sin that you don't even realize or are bothered by it.
I saw this thing that said it's easy to shake your head in disappointment at Judas who chose money over Jesus, but we have to ask ourselves how often do we choose something over Jesus, but we do it for free...and when i say that hit hard.. man that hit hard.