1. Strained Relationship Issues will undermine a couple’s love life. Conflicts relating to money, children or relatives are carried into the bedroom and are best resolved on the other side of the door.
2. Performance Anxiety becomes more of an issue when couples reach their 50s. Worry about performance can make any kind of performance impossible, let alone a 10.
3. Body Image and Poor Self-esteem inhibit couples from initiating or responding to sexual advances. Childbirth, weight gain and thinning hair affect persons’ feelings of desirability.
4 Expectations and Past Experiences can complicate sexual relationships. Though we’re born with a natural sex drive, family, religious background and our peers can color our attitudes to sex, for better or for worse.
5. Stress and Lifestyle Changes sap energy and sex drive. Health and financial concerns, newborn children, aging parents and job security create competing demands that can weaken sexual desire.
Source: Harvard Medical School He althbeat, August 15, 2013