Situation is largely similar to nuclear power. Though it had drastic implication for energy it could also be potentially a weapon and it is.

I believe it will be the case even with warp-drive technology too.

As always some people will always have something to fight on. I don't believe situation will change once we get access to colonizing the vast size of the universe. We will have everything(good and bad things) except that at the scale of universe now.