If most sport tires only last 6,000 miles, and someone rides 12,000 miles a year, that's two sets of tires in one year. That's extra time and money. No wonder people are looking to put harder, longer-lasting tires on their bikes. But I'll put up with it for the extra performance of softer tires.
I used to change my own tires. But I'm too old for that now, and the wife and neighbors doen't like to hear the cussing. I take off the wheel and bring it down to the shop. Saves some bucks and I check the pads when I have it out. Plus I can do an accurate alignment.