there's a very small margin area for success when it comes to that. when you're first learning it's kind of guaranteed to be awful. it's sorta like driving a golf ball i think. when you're a beginner and just starting out on your first practice rounds 1 of 2 things is bound to happen. 1 - you hit the ball improperly and it causes reverberations to go through your arm that leave your hand hurting for a long time which is a totally unpleasant unforgettable feeling. or 2 - you swing it perfectly and it's nice and smooth and awesome. you're going to miss a lot at first but then once you've properly learned how you'll have it down for good and it'll always go great. and i think that consistency is why guys like it so much. although there are lots of other things like not being able to get pregnant that probably contribute to the appeal..
and i guess it is always kinda gross but what sex isnt?