Final was over, but why cheating?

After weeks of studying, writing verilog code for VLSI final project, writing C programs for data structure. This semester was finally over!!

Now I can read whatever I like and spend time on something that I enjoy, such as playing keyboard, guitar. SUMMER~ IS~ SWEET~
I e-mailed a professor today asking him whether I can do some projects with the members in the lab, the answer was YES~ so I have an appointment with him next Monday!!

One of the transfer student cheated at the engineering math final exam today, he disappeared for almost an hour during the test and handed in the answer sheet with the other students. TA did notice his disappearance and questioned him about it, he just mumbled something about the air conditioning. However, according to other classmates, he had a long history of cheating in quizzes.
Since it's not easy to get transfered into our department, so I just don't get it? Why would someone spend lots of time getting into a place but end up cheating even in quizzes?
A false design made by engineers can lead to accidents or even deaths!
If he doesn't have the guts to admit his own failure and take the responsibility, how can we expect someone like this to be an engineer?

Come on man, where's your GUTS?

update: he did cheat on the final cause the TA gave him a make-up test and he failed it = =