Doctor
Not just the Gou'ald, they've helped in other matters but they are a dying race as Egeria died.
Survival. Though she did want to leave me as soon as possible given I wasn't a willing host. Not being able to control my actions, what I was saying and doing...I've never felt that helpless before. But most of the technology the Tok'ra use is the same as the Gou'ald. A lot of it seemed to be showy to instill fear and worship. The ships though were interesting. The pyramids were used as landing pads for them back in ancient Egypt.