Why would you thnk that men would expeience a decline in their sex drives?
Why wouldn't she? Thanks to "media" misinformation most people I know assume that as we age we lose our sex drives altogether. I was at a barbeque the other weekend and a group of us got into the topic of hormones/sex drives and I was flabbergasted at how ignorant most people are about it. The younger generation don't seem to know much more about it either.
And by the way, it's also normal for more mature women to think about and want sex all the time. A good friend of mine is soon to be 59 and to listen to her talk about it you'd think her body was inhabited by the soul of a 20 year old guy.
Life without sex can be very unfulfilling for anyone who wants it and isn't getting it. Been there.