Why do some men after vasectomy increase their "masculine" behavior?

Question

Some vasectomized men have been reported to act differently after the procedure.

Answer 1

They no longer have any sexual inhibitions.  Taking away the fear of pregnancy has  a strong psychological effect.

I sure did for me.  All I ever want to do is have s*x, and I had my vasectomy twenty years ago.  The novelty never ends (mostly because I didn't have children).

Answer 2

duh... the worry of someone pregnant is gone...s*x is more spontaneous and satisfying...

my libido went through the roof too...and my partner sure enjoys the heck out of that!

Answer 3

B/c they feel castrated and less like a man.  The ability to reproduce is gone and he has to "prove "  his manhood in otherways.  

Answer 4

It's a myustery, but when I had my vasecomy my libido went through the roof.Even at 49 I have the s*x drive of a young man .I had my "clip" on July 3, 1984.