Didn't they all? Sarah and Rachel had to share their husband (although it was Sarah's fault in her case), and Rebekah married a man she'd never met before. Maybe as the names are still common today, but I like them compared to others (e.g. Orpah, Bilhah, Zilpah). Tziporah has a nice sound - sort of exotic, but also it makes me think of saphire. She also saved her husband's life (who is one of my favourite bible heroes), so the original Tziporah was a heroine too.