There is a certain questioning of oneself and ones faith that is morbid. I would certainly not recommend to anyone to ever question their faith in a morbid way.
But there is a certain questioning of ones faith that is healthy. Why do I profess I am a Christian?
It is interesting today that there are many people who attend church only when it is convenient to do so. I knew several people in college who scrabbled to find a church within their denomination when their parents came to town. Obviously they had never even looked for a church when they came to college because they had no idea what churches existed in the area.
There is a lot of profession of faith in Jesus without any connection to a church. True faith in Jesus usually results in a desire to connect to a church.
The simple reason is that as Christians we are part of the body of Christ, so to seek to live the Christian life apart from the Church is somewhat non-scenical. The church is a part of God's plan in the world.
I've met a lot of people who are afraid to go to church because they have had bad experiences there. I can affirm that most people who are in the church have also had bad experiences in the church as well.
To live in a world of sin is to suffer and it is not as if evil and sin have not found their ways inside the church.