If I have the choice: No. I don't like the feel of it on my head. Like MM, they make my head sweat and itch and give me a headache. I also feel like my vision is obstructed enough to annoy me.
As of Monday, I will have to wear one for the summer. Due to an accident with another wrangler (horse spooked on gravel, slipped and flipped) that ended with her having a fractured skull, the summer camp I work at's insurance now requires the wranglers to wear one too. (Campers always do, mind.)
I'm sure if I rode english, especially on my mare, I would have one on all the time. Her ability to do a 180 at a lope without much warning leaves me with one foot out of the stirrup and me leaning way over so much that I have to grab my horn. If it were in an english saddle and she pulled that, I would have been off about 7 times in the past 3 days.
Be my guest and wear one. They just aren't my cup of tea.