Fighting, whether in the cage, or on the mat will do that.
If that is how you feel then why even bother with martial arts? Why not just go around being a chingon and brawling?
Yesterday I fought on the mat, but we did it for the competition we are going to be attending, so because of that we had to adhere to many silly rules, like nothing below the waist can be struck, no grappling and no hitting the back. Only targets available are face, head, and upperbody, plus it is touch contact but with no rules on level of force applied.
I detest it but at the same time I never turn down any type of sparring. I bring this up because this kind of sparring will NEVER make you a better fighter. There are way too many rules and the rules turn it into more of a game of tag rather than a fight. We are even told to not see it as a fight because it isn't one, it is a game and nothing more.
It is good for conditioning your body from a cardio aspect and is great for strategy (really makes you think how you are going to get those points when your opponent has so little he or she needs to protect.) It is also good for practicing to not get hit, which is always very important.
Then we have our own personal way of sparring where each bout is 30 seconds and you can do anything you wish, with no protective gear other than your cup. You can grapple (which is about 50% of our style) you can kick kidneys and the back to break down your opponent and soften them up.
There are no points awarded here, just do as much damage as you can while receiving as little as possible, the level of contact here is about medium to high but not full force as we want to do this for at least the entire class and not have to stop it due to a serious injury.
This is where the actual test for your skill is, we also only do this about twice a month because if we did this all the time we would be hurt often. Thirty seconds may seem short but when the sifu calls to switch you immediately have to trade opponents so everyone gets a chance to spar everyone.