Board Thread:Warhammer 40k General Discussion/@comment-25618639-20150604030859/@comment-8881468-20150607133910

118.211.25.79 wrote: Neithan02 wrote:

also if the outer threats are gone, you turn inwards... I believe you forget that the Tyranids came from another Galaxy, which means that once Humans become the dominant species in the Milky Way Galaxy, they can always go further, and find more enemies to do battle with, and more worlds to conquer.

It would take a long time to get rid of all of those outer threats if this was the case. Tyranids appeared en masse in the 2nd half of  m41, the heresy started at the end of m31... enough time to start some bickering, would you not agree.

not to mention that humanity would need to rise to a tech lvl higher than eldar or necrons for intergalaxy travel.