I am always helping someone in need. Just seems like the thing to do. My 2KW generator sitting secured in the tailgate corner of my truck has helped out many of fellow campers fixing to leave their camp site and run down their truck batteries leaving the doors open to long for loading etc... The same goes for my 12VDC portable air compressor...

Always run into someone in the various parking lots standing by their vehicle with that unmistakeable "help me" look.
I have rescued myself many times running down my own truck start battery yapping too long on my Ham radio setup.
Its all about having PLAN Bs....
Roy Ken