moish, first of all, mazel tov. Your close friends and family can have a break now that you can manage your aggression with driving.
About your point drugs vs cheating: If you go through the sefer Shmiras Haloshon, it appears that the worst possible aveira a person can do is to speak Loshon Hara. So why do we get more upset over seeing a person with a yarmulka eating a cheeseburger in a car on Yom Kippur than we do when we see a person with a yarmulka talking loshon hara? The answer to this question is the answer to your own.
BTW, there are some fun grammar lessons online. By fun I mean that you can actually sit through it.