How does the fact the earth axis is tilted affect us?

The axial tilt affects the Earth by its seasons and it's Equator. When the Earth is at a certain point in its revolution around the sun the, say like a face, Northern Hemisphere leans back so that the Southern Hemisphere is exposed more to the light and therefor warmth. At another point in the Earth's revolution around the sun the opposite happens: the Northern Hemisphere leans in and gets more warmth--summer is here. This season flucuation also effects the Equator.