Vader when not on missions spent time in his meditation chamber with his mask off. He built his own ship and modified it. Spent ton of time alone by himself since he didnt really get too much alone time. Had a palace on coruscant he lived in, there was also his castle on mustafar he chilled at. There was castle bast on Vjun too.He owned a 2nd palace on coruscant near the ocean, which was the last body of water at the time on the planet. Kinda neat. He refined his lightsaber skills for fun too.
Sidious had little time to himself too. He enjoyed poetry, reading, collecting art, Opera or theater plays, Hording knowledge or sith texts and owning alot. Tbh Sidious really liked scheming and feeling the thrill of danger. He put himself in harms way alot and even stirred up trouble with the blacksun for while just out of bordem lol
[member="Hareem Dodson"] Not all Sith went out murdering all the time.