I'm just going to throw this into the wind:
I bought my first dash cam in 2015, I think it was an A118. I had just bought my Frontier and about 2 months in, a 16 year old comes whipping around a stop sign and hits me while I'm stopped. Typical scene, police come to take the report, but when insurance gets involved, the kid changed his story and said that I was in the intersection. Luckily I had pictures of the damage and all of the broken parts in the road, but I still had to threaten his insurance company with a lawsuit and from that moment on, I didn't want to chance my word against theirs.
Dash cams are cheap insurance, $30 or $300.
Over the years, I've upgraded. I went 4K with an Anker, I got ones with better night vision, I got a second one for the rear, then I simply got a 2 channel one that recorded front and rear. Each new one got better and better and I've captured a lot of good stuff. When I finally install one in my Ram, I'm probably going to enable parking mode. I see no reason I shouldn't use it, and with a voltage protection circuit, I'm not worried about a low battery.
Depending on your settings parking mode will only trigger with events. It can be a little useless if it's not angled towards the event or if the damage is so minor that you never check, but IMO, it still falls under the 'cheap insurance' category. It's better than nothing.
This is the only other crash I have to report in 7 years of dashcam ownership and 135k on the Fronty:
Link