On the diving front - it is life support. Plain and simple. I'm not sure if you are an active diver but they always give you the parts back in separate bags for each item serviced. So BC, regs, watches, dive computer (to include if firmware was upgraded or in some cases downgraded), and lastly any recalls. Every time I look at the various bits and pieces and I can see wear and tear. Cracked O-rings, screens bent, rust or corrosion, etc. These are quality cold water gear also used by the U.S. Navy in some cases (Zeagle and Aqualung). I don't buy the best or most expensive but it is quality gear that I've had for years so I know I've more than paid in service for what I could buy a new one.
Ever been on a cold water dive and someone brings their warm water regulator assuming it will work in colder temps? I've seen them freeze up both in Monterey and more common in Lake Tahoe. Surface may be a nice and warm 63 degrees but once you get down to 100 feet or so the temps drop down to the low 40's. Hate to have a o-ring shrink, or break, or freeze up and then have to do an emergency accent. You not only put your life at risk you now put the dive masters or dive buddy also at risk.
Diving and my point doesn't equate exactly to the trident but it does, in a small way, the service. It is just resetting it back to a known baseline for which they know how many drips, or rotations, or how clear the glass is, etc. So in my mind, based on my other hobby and experience, it is no big deal. Also I have standards indoctrinated in my brain from my military days. PMEL, NDI, explosive distance, nuclear safe and arming, to something simple as a gas mask. Guess what, that gas mask also gets serviced and inspected every 6 months. In combat theater every 6 days. Rain? Inspected again...
So hopefully you do believe me. I am just being honest and I didn't even get into the check list I used when I actively tracked my Mustang. Thursday and Friday are spent going over the car torqueing suspension parts, fluid checks, top offs, and then making sure I had track insurance before I left. I need to be able to walk away both financially and physically if something happens...