Yes, my first wife needed sex 31 days out of the month, preferably several times each day. Even after many years of marriage. It did become more and more difficult to "recharge my batteries" so to speak. Boy, was she sexually innovative in bed, and really loved an orgasm or two before, during and after sexual activity. Thank goodness for vibrators, as I couldn't keep pace with her desires. Some nights (rare) I just wanted a merciful break from it all, but nevertheless she would "wake me up", even when I was pretending to be deeply asleep. By and large, the overall experience was great and I have no complaints, especially as my second wife unexpectedly turned out to be entirely sexless. Poetic justice!
The downside to the hyper-sexed wife is that, I guess, she needed more sex than I could possibly give her in several life-times. She ran off with a much younger man!