Eh, perhaps mission is a bit much, with the military connotations, but they are testing some valid hypotheses, like will high radiation render billionaires sterile/cancer ridden and will an untested spacesuit kill one. Worthy in my mind.
Morbid humour aside, it's not totally a joyride, could be worse.
Don't worry, greed ensures that Kessler Syndrome will get them in the not too distant future. Sure hope you aren't reliant on GPS or other satellite services, but at least, for a shining moment, shareholders got some value. /s