question: Hi i am a hetro sexual who is now thirty; when younger @ early twenties, i was a sex machine having erections for 8-10 hours and ejuaculating @ most 8 times in 10 hours (intercourse with a female) with minute soft spts in between.  I was still ready for more. Is that normal?  And what is the average.  PS. she was glowing with pleasure but chose to leave, insights of why?