Getting used to earthquakes

I didn't think it would happen this fast, but I am actually getting used to the earthquakes. Last night at just after 1am there was another earthquake.  It was fairly large for the area at 4.5.  I woke up, felt the bed rumble, heard all the pictures rattle and thought to myself, hey, an aftershock.  I then went back to sleep.  I didn't think of getting up and checking on the house at all.  A year ago I would have been awake with adrenaline pumping for hours.