No question about it being warmer. I'm in the mid Atlantic and I haven't turned the furnace on yet. My cut off is when the house starts dropping below 59 and I can remember needing to turn it on in October.
Cycles are a natural state, the planet has had virtual global ice ages and the ice has gone back many times, just like the magnetic poles have swapped how many times??? I seem to recall hearing something about the ozone layer having gone through different phases, too, and even the gravity waxing and waning (which is the only way I think something as large as some of the dinosaurs could have lived anyway), but in the whole scheme of things humans are just a blip on the radar.