After the match - after you are alone and showering - you know who you were today! We NEVER "get away" with cheating. The most important person - YOU - are always watching your own behavior - and have 100% insight on your intentions too!
Honesty is not important just to be kind - it's imperative for a happy life! Being unkind or lying in any way is very hurtful for your own consciousness - EVEN IF it's in retaliation to "their bad calls". ALWAYS TAKE THE HIGH ROAD. It's good for your emotional, mental, spiritual and physical health!