Do you stick to a music genre for a long time or are you soon bored?

I often just have my iPhone on shuffle, and I have a fairly decent mix of genres on it, so I end up listening around to a few genres so I don't get too bored of one. My bigger issue is I like driving, up-tempo music, and I don't have much mid or low energy stuff so I can get tired by the constant drone that tends to create.