No privacy for sex life
It is assumed by many that people over 50 have the freedom to conduct their sex life pretty much as they want it, since there are no longer any children in the house. Unfortunately that's not the case with us. I am 53 and my husband 56, we have our 21 year old son still living at home. Why is he still there? Many reasons, both financial and mental...he is on the autism spectrum, it is mild, but enough to mean that he is not really ready for total independence yet; he is also at university, so studying is important, as is stability of environment; he doesn't "live away" during term-time.
Naturally, with him in the adjoining bedroom of a fairly small house, we have to restrict our sex life to something like between 3 and 5 in the morning; and keep pretty quiet about it, too. We can't of course, have sex anywhere else except our own bedroom. We are rarely alone, as a couple, even during holiday times; our son has few friends and rarely goes out (mainly due to his social awkwardness).
I am not sure how much longer this can go on. Although sex is ok, my husband's drive is now lower than mine (mainly due to the fact that for some reason, mine has increased during my peri-menopausal phase); and at 3 in the morning it is understandable that he wants to just sleep, not be poked awake by me! Sex is therefore very measured, always the same thing, same place, same time, can't really relax mentally. I also feel that his interest may be declining further, as a result of these restrictions, and he isn't getting any younger. It could be years before we are "free" in the way people normally imagine 50year olds to be.