My favorite part of my quiet time is when I struggle with God. When I don't understand something and I can just tell God that I don't get it. That I don't see why something happened, or what a passage means, or why I feel a certain emotion. I'm able to do that, though because I'm alone with Him. I wouldn't be able to do it as much in a large group setting, and definitely not as much in a worship gathering teaching format.
That's why I love small groups. It makes people willing to be more vulnerable. Their more willing to expose their true feelings, emotions, struggles, and doubts. JM