For what it's worth, I'm servicing my primary set of regs for the first time in 3 years this season. They still work perfectly well and breath as good (or better) than they did the last time they were serviced. If it ain't broke, don't fix it is a pretty good rule. Inspections go a long way to making sure there aren't any "catastrophic" failures beyond repair on my regs. I inspect them before every dive (externally) and internally once every two or three years (at this stage I've only been diving a little over 3 years) as I think is necessary. In the future I suspect it will be about the same.
The only thing I (in my admittedly limited diving experience) consider life-support for rec diving is consciousness. If you're awake and aware, everything else can be dealt with according to it's necessity for remaining awake and aware.
The only thing I (in my admittedly limited diving experience) consider life-support for rec diving is consciousness. If you're awake and aware, everything else can be dealt with according to it's necessity for remaining awake and aware.