Agreed, humans did not cause the last ice age.  Ice ages are artifacts of Milankovitch cycles - subtle variations in earth's tilt, distance from the sun, solar intensity, etc. that have well known periods of occurrence (though all of them are different so their combined effects don't show up like clockwork as you might expect).  Why do you refuse to acknowledge these facts: 

-The earth has never warmed up this fast in at least the last 800,000 years.  

-There is less than 1 chance in a million that global temps and CO2 concentrations are NOT causally linked.  

-The earth's CO2 concentration is the highest it has ever been in 800,000 years (and quite possibly more) and during that time it has never spiked so high so quickly - not even close.

-Much smaller historic changes in CO2/temps have resulted in the earth going into and out of ice ages.

So where are we headed now???  Hint: It isn't going to be good...