Clueless & ignorant!!...
I'd love to know what you do for a living? I bet you think you're under paid too.
Here's a suggestion: Go to trade school, buy all the tools necessary to diagnose & repair your car sucessfully & right THE FIRST TIME, (scanners, full set of hand tools, tire equipment, emissions equipment, digital meters, pressure gauges, precision measuring tools, welding equipment, A/C serviceing equipment, waste oil & anti-freeze storage containers, compressor Air tools, specialty tools needed for specific tasks you may only need 1 time but can't do without to fix the car, additional training to stay on top of an ever changing industry on & on) & THEN FIX YOUR OWN CAR & SEE HOW MUCH A PROFESSIONAL IS WORTH!! Just do it for the vehicles you own. Now multiply that for the hundreds of vehicles out there that we deal with daily. I bet you can't even name all the various systems & subsystems that are in the car you own.
Yes I am a CAR DOCTOR!! And my patients change with every year, make & model! Unlike your health care provider who has 2 models to deal with & they haven't changed since Adam & Eve! Pull your head outta your *** & walk a mile in my shoes!
Tax write off.. Gimme a break! You know just as little about business accounting too.
BTW, I'm not knocking Health care providers, they work hard & have a lot to know & have great resposibility too. I'm just making the point of how much is necessary to know in my field.