A lot of the feelings I have are the endorphins rush . The orgasm is just the finality . Even if I finish first , it's still exciting to help my wife .
You said that you had a child . Does that mean you ejaculate without any sensation ?
The feeling of orgasm is undescribeable .You feel intense joy. you feel relaxed.There should be a medical reason. well balanced projesterone (female hormones) , and teststerone are main hormones which makes sex pleasurabable. Doctor should be able to treat you to make you normal. YOy may try few exercise like abdominal breathing, male deer exercise, Sat kriya. Any exercise, which is connected to groin area can help to increase blood flow to this area and help you to recover your sexual pleasure. you may have to learn some techniques to enjoy sex.