The main reason I go to the track is to get as much track time as I possibly can. I have the most fun that way and when I'm in the pits waiting for something, usually bad things happen
I honestly hate motor work, I personally have no fun working on motors or tweaking on them. I know there are who love to tweak on those things but I'm not willing (sometimes not able) to pop $40 a shot for a tuned motor. I go to the track to race and work on my cars setup. I enjoy doing setup work and prefer to devote my time to thinking about what change I should try next or talking with a pal rather than cutting a motor. I prefer not to have to think about my motor therefore, I love brushless technology...
....except when my ESC fried last week... (well, I did gear it a little high...LOL)
I respect people who like the brushed motors, I hate them but I know people who like to tweak on them and as a result make a few bucks on the side. I enjoy the hooby in my own way and they do too...we both have fun and were both happy (as long as the race director lets me race)