As I stated, both of you want something, not need something.
Games like WoW or EvE-Online force you (through use of skill points, abilities, what-have-you & choices in alliances or factions that specifically close others off) to choose a certain path.
Elite does not.
You might want another character but you don't need one to do everything in the game unless you choose to do some sort of edge-case role play.
I stand by my previous post.
If things we need are the test, can I suggest that you throw your gaming PC out of the window and burn your house down. Assuming that you're a human being, air, water and food are the only three things you need. Of course we're talking about things we want, we're discussing a computer game.