I had said I "RARELY" use the front brakes and all the replies are like I never use the front brakes.
Sorry, but I'm going to have to chime in on this one and this is not intended to be derogatory or condescending in anyway. It's for the benefit of the group. I've been teaching motorcycle riding and licensing riders for 19 seasons We train and license new riders as well as riders with up to 5 years experience who are graduating to a full M license. This includes parking lot as well as road riding/testing. Hopefully that adds some credibility to my comments.
Approximately 70% of braking in normal conditions is done with the front brake. When braking, both front and rear should be applied almost every time.
Of course, there are exceptions - when doing a slow-speed maneuver where you're slipping the clutch in 1st gear and turning, you should only use the rear brake. If you are turning (slowly) and you suspect traction may be less than ideal (gravel, sand, water, oil...), use rear brake only.
If you are slowing or stopping in a straight line, use both brakes. If you are slowing down or stopping in a curve or an off-ramp in normal conditions, use both brakes.
When I saw the word "rarely" I interpreted it as something like less than 10% of the time. During normal riding, whether that's on the highway or in stop-and-go traffic in the city, you should use both brakes 90% of the time when braking. The front brake really does the lion's share of the work. Using only the rear increases stopping distance. It's also about forming good habits - if a rider only uses the rear brake most of the time then when they need to use both brakes (like in an emergency) they may not be as proficient at braking as they could or should be.
I believe I said this before in a previous post but I will say it again - it is really, really beneficial to take an advanced or even a refresher rider training course. It's money and time well-spent and I guarantee you will have a blast doing it and it just may save your life.