Impotence is not just caused by aging or automatically by aging. It can be treated successfully in most cases but it's better to live a lifestyle such that you don't get impotent rather than treat it after it happens.

The Journal of Urology occasionally has articles about impotence in it.

Most men have sex problems. Very few will admit to it. Most men are poor lovers. I can't test that. I know because if you're not sensitive in real life, you're not sensitive to your lover in bed. Men are afraid of intimacy. Many can't get erections. Nobody talks about it except for TV ads selling pills.

If you don't have an attractive body, your lover or spouse won't want to make love to you. Start there. Take care of your body for your lover. Pull out your nose hairs now and then. Take a shower. Be kind.