You can trade, mine, be a Bounty Hunter, do militaristic jbs... it's an amazing open world game. There are lots of ships to choose from with your own custom loadout. You can upgrade anything on your ship from the type of guns to your shields and generators. You can play the game over and over, there are thousands of ways to play the game and thousands of different strategies to go with it.

Especially when you build up your little one man army into a 50 ship armada, it takes time.

None, nada, zilch. Play it forever with no pop ups or interruptions