What are your three favourite traits to have?

[Kaballah]

Start with nudists, and strip any captured people and leave all clothing forbidden 

[ZioN]

Iron-Willed, Bloodlust, Cannibal. Just kill any visitors and chop them up for food

[REMworlder]

Industrious, jogger, and too smart are some of my favorites. Green thumb is really nice too if the colonist is decent at growing.

Negative thought penalties are worth having better work speeds, IMO. Just being a few percents faster at learning and crafting for something like sculptures is a really nice gain.

[Argon]

Bloodlust
Masochist
Psychopath

They survive the hardest of times feeling perfectly fine...

-Argon

[lusername]

For colony-wide traits, you can't beat Psychopath and Cannibal, for the simple reason that everyone will always have lavish meals of liver and fava beans to eat, as it's the one source of meat that never seems to run out.