Okay, I was with you until the following:
"So the man made influence might be insignificant - but it's not likely.
It's no question that man contributes to the warming."
Have you got any proof of this whatsoever?.
yup.
we burn fossile fuel - that produces CO2 and H2O the first is a highly efficient reflector of heat radiation - thus we contribute via the so called green -house effect to the warming of the globe.
This is known long time and not even discussed anymore.
The controverse is about the magnitude and significance of this contribution.