I'd have to say 41 and a couple months. I turn 41 in May, and plan to get a smartphone when we get back to the States. Hubby has one, but since I don't really have many people I call here, I either use his or my old crappy one. It is the worst phone I have ever had for calls and texts, but by far the best camera I have ever owned, so I intend to keep on using it as a camera when we are back in the States.
How old were you when you first started using a computer daily?