I really don't think it's the case. And anyway I don't matters much, according to this article http://www.nhs.uk/Livewell/penis-health/Pages/penis-size.aspx women aren't that bothered about penis size.
I never ejaculate and have not done for many years. I do however have big balls and a big penis, so maybe there is a connection
There is. I was celibate for a good 4 years before exploring an erection which I actually regretted and it was somewhat bigger but not anything to cry wolf over.