We're incredibly lazy and we tend to avoid doing anything that would involve more than, say, 10 seconds of clean up when we masturbate. So we always forget just how just much fun semen can be.
And it is! As this Xtube clip reminds us, precum is kind of like your body's very own endless supply of Gak (anybody remember that stuff?) and it doubles lube! And it doesn't get really gross rug fibers stuck in it when you drop it on the floor! AND the hot muscle boy playing around with his precum is, like, super hot! That one's really the clincher.