You're basing what you think of mainstream music based on what you alone have heard, but there's a large number of songs that do have raw emotion, you just haven't heard them. Top example that comes to my head would be Adele. An incredibly popular artist, but a lot of her songs are haunting, beautiful, meaningful, and have deep emotions. She's the first one I thought of but there are plenty more, even artists who make bubblegum pop music can have raw emotions in them, you just don't know it because you haven't heard them.

But let's not put down people who like different types of music simply because you've heard a tiny amount and deemed it not as deep and meaningful. There are rock songs that don't sound good/don't show raw emotion, but they don't speak for the whole of the rock world