
Based on how u typed this you sound like a man. So based on this info, the reason it feels good is because the penis orgasms and urinates out of the same hole so sometimes peeing came feel like an orgasm but never the other way around. Anyone with a vagina doesn’t go through this since a vagina orgasms out of a different hole that she pees from.
You’re very uneducated about biology! Women experience pleasurable sensation from holding in urine due to the of the closeness of the bladder near the clitoral nerves and urethral. As the bladder expands, it'll apply physical pressure on these sensitive internal tissues and the nerves, will carrying sensory and pleasure signals to the brain. When the bladder is finally emptied, theres a sudden release of pressure which triggers a response and stimulates the brain’s to release dopamine.