Actually, good meaningful sex is less performance-oriented. It can be done very quietly without much hubbub. If sex enhances you as a person and enhances the other person and enhances your togetherness, then it's a good thing. It really doesn't make much difference whether or not you have had an orgasm, or if you did it in 12 different positions, or even if you had an erection or whatever. Sex is a close, intimate, loving relationship between a man and a woman who are unafraid of doing the things that please each other.
Most older people are able to lead an active, satisfying sex life.
Older women do not usually lose their physical capacity for orgasm, nor do older men lose their capacity for erection and ejaculation. However, we can expect a gradual slowing of response in the physical body. When problems occur, they are usually the result of disease, disability, drug reaction, or emotional upset. Older men may take somewhat longer to attain an erection than when young. The erection may not be quite as firm or as large as in earlier years.