Are you using a stock gauge or are you checking it with a good aftermarket setup? I would start with verifying the actual pressure it's putting out with an analog gauge at warm idle. You'll be surprised what you find. I'm sure others will chime in here and I'm no expert, but 7-10 psi per 1K RPM is probably adequate for these engines.
Your bearings will wear and effect oil pressure long before your oil pump will wear out and reduce volume. Oil pressure itself is an indicator of both bearing clearance and oil flow...the reading itself is not the only thing that matters. A heavier viscosity oil will give you increased pressure, but reduced flow. The opposite will happen with reduced viscosity, higher flow and lower pressure. Personally, I would value flow over pressure.
In this case, unless you've experienced a sharp drop recently, you're probably fine.
Hope this helps.
Ian