You are abosolutely correct but it is still getting hotter. This ice age is not going to happen overnight. In The K-T boundary This Earth was still stabalizing. When before it could stablize it was hot. Something apocalyptic happened in the past that led to a chain of ice ages. It could've been a comet or an ateroid but what ever it was it was bad. For that reason I say that we are entering an ice age because right now some is going that is also apocalyptic. We are deforesting, we are dumping CO2 emissions, we are polluting. This is a very tramatic change for the Earth just like it was in the K-T boundary. They may be very different and one may have happened faster but they both lead to the same outcome