Morality

This post is all about Morality in Mass Effect. Similar to a lot of other Bioware titles and some other games ... you have dialogue options and choices during quests. Save this alien ... stab this man in the chest with some form of electrified wrench ... this list goes on. Even during the first game during character creation - you choose to make your character a hero ... or perhaps a man willing to do anything needed to accomplish his goals. Morality therefore becomes very ambiguous during gameplay. Sometimes its more beneficial to be evil - something I discovered when playing on the harder difficulties. If I stab the mechanic in the chest then its all the easier to defeat the final boss of that mission since the mechanic didn't fix his ship. This leads to some very interesting questions that have to be asked as little as I like doing so.

What sort of morals is the game teaching us?
Why is being bad/evil sometimes the more beneficial options?
How do these morals crossover into real life?

I don't have answers to these, it's something everyone needs to answer for themselves.