Do you know how to work on your own truck?

Well I guess I'll throw in my 2¢ worth. In the 45+ years of trucking working in 46 I have learned that while I know a lot and do troubleshooting I rarely work on the truck simply because A. I am getting older, B. I don't have the tools or a nice shop to work in out of the weather.
But the main reason I don't work on my truck and trailer is because IF you are in an accident then the attorneys for people suing you (yea they will no matter who is at fault) will want your maintenance records. Not just the parts list but they want to know who did the work, their qualifications etc. FOR me it's less stressful to use a GOOD shop that I have a GOOD relationship with than it is to spend hours attempting to do something that I frankly am not qualified to do. Yes I have dealt with some crappy shops and had to get fired up to get things done CORRECTLY. If I have that problem more than twice I find a new shop. I am blessed to have several good shops including a dealership that will work me in as I am a good customer. I have good relationships with the mechanics and the parts departments. This doesn't happen over night. It is worth the effort to cultivate these relationships as they are more valuable than the ones you have with the bank and some customers. Just my thoughts. No words of war or disagreement just the facts as they are in my world.