In my last relationship, I was the one with the much higher sex drive so more often than not I was feeling dissatisfied with our sex life (even though I'm sure he felt it was quite frequent in his opinion). Now that I'm in a different relationship, I'm feeling much more satisfied which oddly enough results in me not wanting it 'as much' as before. Its still really frequent (granted, we're still in the early stages of the relationship) so I'm sure we're both happy and satisfied.
Once it starts to decline (which I know it will - its only normal) I can only hope that we'll be at the stage where our love is expressed through so many other avenues that we don't feel a loss of 'twice daily sex' but rather feel a much stronger commitment to one another and a greater closeness when we 'are' having sex.