I'll do mine one of these next couple of weekends. I don't know the first thing about cars, but I think if I told my dad I sent mine out to get done he'd look at me like other people's fathers would if they told them they took their car in for an oil change.
He's not an accountant or anything, but used to do his entire extended family's all by hand, and I'd sit and learn. I have few life skills, but I'm pretty good with taxes. When I got married and my wife and I started filing jointly, I started looking at the crap the accountant she had been using was doing, and it made my blood boil. He was missing obvious stuff, but falsely claiming other stuff. It was a mess. I was shocked we didn't get audited that first year, simply because of how many things on hers changed without reason, just because they were suddenly finally done correctly.