what's funnier is when your enemy tries to wage war with you and your all the way in the corner. the attack can only come from 1 direction so it's relitively easy to mount a defence as Craig said.
I find that i'm often placed in the corner as well. It's terribly difficult to try and win a military conquest victory when you only have a small corner of stars and the rest of the races have the entire galaxy. I guess it's a nice challenge to overcome but it makes me feel more secure knowing i have many planets at my disposal rather than just the corner.