You ever think about all of the good sex you used to have? When you could fuck for hours. That same gf and I went on a 3 day marathon fucking spree only stopping for potty breaks and snacks (I have low blood sugar so I have to eat at least a Snickers.) Now, 45 min is a marathon and my back hurts for a couple of days and I'm walking like Fred G. Sanford. Days go by fast so enjoy them. (*Yes, technically I am still young but my body is tired. Been hobbying for about 17 years now.)