Why are we not looking for aliens!?Its better we strike first than them.
Firstly if we strike first they won't know where we came from.But if they found us first the same goes to them.
secondly they may be deadly.If they find us first it will be war of the worlds.So yet again,advantage or disadvantage.
lastly they may think we're gods and bow down and do our bidding but the same will go to them.Do you want to be god or them.
So think about it,all of it. wouldn't it be better if we are the gods of killing and conquer all or just be lesser slaves working for our alien masters,You decide.