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One still can rape eventhough he had vasectomy. Vasectomy only make a man cannot have child, yet doesn't cause him impotent.

Am getting confused.
Vasectomy makes a man not to have a child but not impotent - how?

What make you confused @brother @starl? As I learnt at my college, vasectomy is one method of man contraception. But it will not cause erection dysfunction. So the man still can have sex normally, but the sperm cannot go out.. which prevent him from having a child. The incidence of impotence among man after vasectomy is rare.

https://www.healthline.com/health/erectile-dysfunction/impotence-after-vasectomy