Nothing New
"Fire and brimstone" preaching wasn't popular in the Old Testament days either.
"'Do not preach' - thus they preach -
'one should not preach of such things;
disgrace will not overtake us.'" (Micah 2:6)
Let's just say the prophets weren't shy about warning other nations of God's impending judgment. It doesn't always have to be horrible news, of course. There is much about God's grace for those who repent, but there is also very much about God's wrath. More than I'm comfortable with, to be honest. It simply isn't a taboo subject for them, though I'm increasingly more convinced that God doesn't tell them to preach as such simply because "it was more effective back then" or something. People don't like to hear about their sin, but this is where the gospel starts, does it not? Law before grace.
I hate talking about my own sin. I hate when others know about my sin. I just hate it. It's not comfortable; it's embarrassing; it's humiliating. But it needs to happen. Sometimes we can feel good about getting the respectable sins out. Like "I thought better of myself than I should have in this situation" or "I desired that thing covetously." What about the deepest parts of your soul that you don't want anyone to know about? What about the kind of sins that you're afraid of people knowing about because even if they're your best friend, you're sure they'll abandon you for it? Those hurt. The conviction there is not fun.
And then comes the Christmas news, the good tidings of great joy. In that darkness and sin and sickness Jesus Christ enters on the scene, and he takes personal responsibility for everything. The good news is that when there was nothing worth being excited about, when there was every reason to be afraid and be weighed down with guilt, it is then that Jesus Christ steps between you and God's wrath. It is then that he comes with hope of justification and freedom and salvation.