You should try the real thing. It's a thousand times better than a 
dildo: warm, the right feeling of firmness and softness, and best of all it's attached to a real person, with feelings, who can enjoy the experience. A 
dildo only does what you do with it, whereas a real dick is under the control of another man and he'll fuck you until he's done. That's a whole different level of intense.
Maybe ask your wife if you can try a dick. Maybe she'll bring you one, or let you invite one in and take part in a threesome where you take the extra dick. It will spice up your life no end. If you get close to cumming from fucking yourself with a 
dildo imagine how you'll respond to an expert top's dick.