TotallyNormalPerson
A: sure if you have a ship moving in a certian direction oull experiance some gravity however youd have to be moving to, with cylanders all you have to is rotate them and have consistent gravity even when not moving.
B: yea of course there will be wars however im talking about ship - ship combat, just because you can use weapons like misses dose not mean that it would be pratical, yea sure i can go out strap missles to my ship and hunt down cargo ships, however all they would need is pd with a wide spread, to shoot it down, meanwhile the other pd shots that missed ill continue on forever, witch can cause future issues. Plus lets say there was a area with high piracy, you can easily detect ships even if your light years away.
C: I doubt that there would be much piracy anyways and conflict really. First what reason would there be for pirates to exist, in a future where space travel is available for everyday citizens then theirs probably enough recesses that we would be in a post scarcity civilization (AKA no jobs and money is needed) however i doubt that people would have space ships like we have cars today, thats not saying that you cant have a ships license, we don't have every citizen with a plane sitting in their garage however there are a few people out there who do have a pilot license but don't fly planes as their day to day job. Most space travel would be done by companies like airport companies today, and if you did want a star ship pilot license you would need plenty of cash be trusted and be trained for a long time till you can be trusted to fly on your own. Even if we did reach a post- scarcity civilization there would be some sort of social system like in china today where your actions are watched and you will be denied certain privileges based on your actions
D: Now moving to the possibility of finding other life forms one thing i notice that people over see is desseses, when the Europeans ventured to the new word they brought a bunch of deadly desseses and of course we brought deses from the new world to Europe, now of course the chances of us getting desses from an alien planet would be low as i see we would have micro machines dealing with those for us, however i can imagine us killing off many plants on a alien world, to avoid that we would have already scanned that planet with self replicating drones that would also send out millions of micro drones to research the planets and check out the life there, or we can do the longer but possibly better option of transforming a planet to our needs or when we get all the information on that planet bioform the colonists. Now for finding Intelligent alien life equal to us or better, well we have no evadince of them existing out there as we see no sings of a K2 civilization, however lets say we do and we do go meet them they would probably be simmer to us as in they would probably also have the to keep them healthy, however if they were Xenophobic they they would easily just tell us to stay away, and chances of them wanting to purge us is low if you ask me as a civilization that wants death to all who are not them would have killed themselves off in their own wars on their planet.