Nebula/Gamora
And since when have you, my Sister, ever opted for the easier path just because it existed? Challenges are part of who we are and, while I will not argue with you that less of them would be better...it just seems imprudent. We would be removing ourselves from both resources and allies alike, and you know none of the Guardians, save perhaps Rocket, would less us go without some form of quarrel -- presuming they did not just outright follow us in the first place.
Of that I am certain, but how much harder would it be for us? It is not as though either of us blends into a crowd well and, should word get out that we are no longer in League with the Guardians, how long do you think it will take before the bounties start pouring in again? We would be hunted worse than we, presumably, are now and we would not have the benefit of secrecy and security that Knowhere affords -- even with all its trials.
Let's sit down and discuss what we might pursue in terms of better readying ourselves. We can figure out places we might go, things we might investigate, and, with the help of the passports, we should be able to do so with relative ease and privacy. No ships to track, nothing to worry about, and an emergency exit button should we need it. Does that sound like an agreeable compromise to you?