Is impotence just a male menopause?

Wouldn't say that it's insulting, Joach. By putting a name to it we have classified it and that allows for dialogue and discussion on the subject. That allows for treatments and remedies to be sought and found. [If treatment is never even sought then it's unlikely that it will be found]

No.
Usually classified as Organic or Psychogenic.
Organic is usually caused by disease processes like diabetes, cholesterol, and high blood pressure. Other problems could be due to hormone imbalance from your pituitary or other location. There are many causes.
Psychogenic is what it sounds like, "its in your head." People with this problem do not have a physical problem, but a mental block or fear.

No

Nope no such thing Hey I'm 70 and still going strong

No...it is not "just" anything. To say such a thing is simplistic, and possibly insulting. It can be caused by a number of physical problems, such as heart disease, diabetes, low testosterone, etc. and/or it can have a psychological component too. That is why all men much over the age of 40+ with impotence need to get medically evaluated before treatment.

Erectile dysfunction (ED) or impotence is a sexual dysfunction characterized by the inability to develop or maintain an erection of the penis for satisfactory sexual intercourse regardless of the capability of ejaculation. There are various underlying causes, such as diabetes, many of which are medically reversible.

The causes of erectile dysfunction may be physiological or psychological. Psychological impotence can often be helped by almost anything that the patient believes in; there is a very strong placebo effect.

Due to its embarrassing nature and the shame felt by sufferers, the subject was taboo for a long time, and is the subject of many urban legends. Folk remedies have long been advocated, with some being advertised widely since the 1930s. The introduction of perhaps the first pharmacologically effective remedy for impotence, sildenafil (trade name Viagra), in the 1990s caused a wave of public attention, propelled in part by the news-worthiness of stories about it and heavy advertising.

The Latin term impotentia coeundi describes simple inability to insert the penis into the vagina. It is now mostly replaced by more precise terms.

Medical symptoms

Erectile dysfunction is characterized by the inability to maintain an erection. Normal erections during sleep and in the early morning suggest a psychogenic cause, while loss of these erections may signify underlying disease, often cardiovascular in origin. Other factors leading to erectile dysfunction are diabetes mellitus (causing neuropathy) or hypogonadism (decreased testosterone levels due to disease affecting the testicles or the pituitary gland).

Medical diagnosis

There are no formal tests to diagnose erectile dysfunction. Some blood tests are generally done to exclude underlying disease, such as diabetes, hypogonadism and prolactinoma. Impotence is also related to generally poor physical health, poor dietary habits, obesity, and most specifically cardiovascular disease such as coronary artery disease and peripheral vascular disease.

A useful and simple way to distinguish between physiological and psychological impotence is to determine whether the patient ever has an erection. If never, the problem is likely to be physiological; if sometimes (however rarely), it is more likely to be psychological. The current diagnostic and statistical manual of mental diseases (DSM-IV) has included a listing for impotence.

A wide variety of options exist for treating erectile dysfunction. They include everything from medications and simple mechanical devices to surgery and psychological counseling. The cause and severity of your condition are important factors in determining the best treatment or combination of treatments for you. You and your doctor may also want to consider how much money you're willing to spend and the personal preferences of you and your partner. If erectile dysfunction is the result of a medical condition, the cost of treatment may be covered by insurance.