In my opinion, I think that living in a space ship would be better then living in a submarine that never surfaces .
I believe this because firstly, going to the restroom in a submarine would be quite the challenge. It would be a challenge because if you installed a toilet then the pipes would have nowhere to go and it would have to be released into the ocean. However in space, astronauts relieve themselves in plastic bags that can later be used for scientific purposes that might help the environment. While that does sound odd at least it helps but in submarines plastic in the ocean is a big no.
Another reason is that if you get your monthly time while on the submarine, a shark is bound to smell the blood and find you. People say that “you could see beautiful sea creatures!” but the truth is, once you spend a certain amount of time in the water, all you’d see is 10 bubbles per hour.
Finally, the last reason is that the water current would eventually push open the submarine door due to sea pressure and water would flood in. By the time you have a risky idea, it’ll be too late and the water would already lead you to your end.
So that’s why I think living in a space ship would be way safer and better.
Which option would you pick?