I have been for many years now. Geological evidence shows those cycles have been happening much longer than that. Unfortunately we can just recently only go back roughly 2.7 million years with the ice core samples. Whats interesting is that at around 1 million years ago they were more frequent at about every 40k than they are now at about every 124k. The cycle has slowed in frequency over time.
But there are many factors that could have caused this change the article mentions. The equator could have physically been in a different location around earth. The biggest climate influence could have changed which would be the ocean currents. Extraterrestrial events, Volcanic activity, many different things that coincidentally could have happened at the same time, Etc.
Something else interesting is that the earth timeline has been in a cold cycle much more than a warm cycle to the tune of about 85% glacial to 15% interglacial cycles. The cold glacial periods last a lot longer than the relatively short warm interglacial periods. So we had better enjoy it while we can, the interglacial summer is about over. :)
But then again it is not about stopping climate change but power, as in One World Gov.
The fact that we are likely headed for a long decent into cold means we should not be wasting our fossil fuels today. We should be using wind and solar and saving those fuels for freezing weather. Also we need to get serious about reducing the world population. And it does not need to be done the Chinese way or by rampant abortions. Look at all the migration troubles throughout the world today. Imagine what is going to happen if the temperature keeps going up, droughts become more severe, storms more violent, and significant areas of seacoast and urban areas threatened and overcome by sea level rise. Then if the big freeze starts suddenly, vast migrations to warmer areas. Already we have seen the Syria migration problem. Much of this whole problem caused by severe drought driving people to the cities in Syria and a very unsympathetic ruler.
Right now, what I fear is the slowing and stoppage of the North Atlantic Oscillation (NAO). That is water heating up in the tropics, flowing North as the Gulf Stream, the water freezing into fresh water ice in the far north and the saltier and heavier water that remains sinking deep and flowing back toward the equator to repeat the process. With so much less ice seeming to form in far north waters, this circulation process can be in danger. Without the warmth of the Gulf Stream, British Isles and Europe would become far colder. Crops would start failing, and the people from Africa and the middle east would be even less welcome and desperate. Part of the cause of the French Revolution was economic failure as vulcanism in Iceland following 1783 caused multiple crop disruptions that even our French ambassador, Benjamin Franklin, commented on.