RedHeadWife, perhaps you need excitement, stress, and adrenaline to help get you there. I'm sure there are other situations besides the "D sitch" that would do it. Before having sex, go on a roller coaster ride? Exercise? Walk across a deep gorge on a rope-suspension bridge?
murrayskeeter, like you say, those are averages. The problem is, for most couples, one or both partners are not close to average. In the early years of my marriage, I bought into a similar "conventional" wisdom, namely that women peak sexually later, at which point her sex drive would finally start to match mine. Never happened. Her's went to zero, while mine is still about what it was in my teens. And though we're about 5 years apart (closer to what you're "recommending"), it hasn't helped one tiny bit.