I think wide bars are an Australian thing. I dont know very many people with under 720mm bars. I love wide bars. It feels natural, not like having your arms all cramped up.
I am running a Gravity Light, uncut at 800mm on my big bike and it is great. Obviously, tight spots in the trees are interesting to negotiate, but well worth it in my opinion. Start with a wide bar, as you can always cut it down.