What's boost?
I rarely use it... Probably about once a day I hit it, and it's due to a VERY poorly designed on ramp near me, speeds usually drop to 40 odd km/h in a 90 zone... Using 3rd gear I pull onto the outer lane with a decent amount of throttle (Mind you, I do it in a safe gap too!) and that's normally only low boost too.
I rarely hit full boost, maybe once or twice a week.
I just baby it, it's driven daily, and there's no need to hit full boost on the way to work.