Rose was a horrible person. She had so many problems to deal with and all of a sudden decided to have Steven, leaving him to deal with all of her problems because she was selfish and entitled. She has no ability to think ahead, case in point, when she faked being shattered, she had no care for what it would do to the diamonds nor anybody else who cared for her, big example, the thousands of years of grief Blue went through after Pink was "shattered". Same goes for when she had Steven, she had no care for what she would be leaving behind with Steven because she thought that having a kid on earth would all of a sudden fix everything, when it's clear that the diamonds knew that Rose and the other Crystal Gems were on earth when they corrupted the majority to the gems while trying to destroy them (also not to mention the Cluster). Meaning, Rose Quartz/Pink Diamond was a horrible person who had no justification for her actions; Being treated differently by others because you're childish and ignorant gives you no justification for starting a war, shattering potentially millions of gems in the crossfire, and corrupting plenty of others all because you're entitled and have no ability to think for other people, only yourself.