I've been married a bit longer than you (although I'm not that much older than you), and never gave up masturbating (although I don't do it as often as you do!). I don't see a problem with it, nor does my wife.
If it is not affecting your sexual relationship with your wife, I say go for it. I have a higher sex drive then my husband so I can relate.
Masturbation has its place, but it's more of a mechanical release of sexual tension than the ultimate sexual relationship you would have with your wife. I might wonder if all that mechanics might detract from the real deal. I would rather not be releasing that sexual tension so frequently and then have the more enjoyable and fulfilling relations with the wife, resulting from mutual expressions of love. I'm not influenced by religion on this whatsoever. I would just rather hold out for the real thing: a living, breathing, loving, warm, interesting "partner in crime" for mutual benefits.
thats funny--take it into your own hands
I'm 47 and I still have to deal with a high libido . My wife's is down , so at times I have to take matters into my own hands . I am more patient then I use to be .