Why would you NOT want to haul "illicit" cargo? Being that this is a BETA TEST of a pre-release version, our progress is going to be reset at least once between now and the end of the program and the final retail release of the game. You may as well experience ALL ASPECTS of the game now while you have the chance, and worry about being squeeky clean later when we start in with our FINAL VERSION save file.
At least that is what I would suggest. Besides that... You don't get any browny points for being a "Goody Two Shoes"! lol!
The fines are always much smaller than you usually get paid by the agent to haul that same cargo. Just be sure to be quick about delivering whatever it is so you don't keep getting scanned and fined everywhere you go!