D'oh, sorry, I misread that as statistics of suicide in startups. Maybe if the "or" later on in the sentence was replaced by "and" it would be clearer, but that narrows your statement.
No problem, I've re-written that sentence it now reads: "The failure rate of start-ups being what it is, if you are suffering from depression or if failure is not your thing then start-ups are the very last place that you should be."
That should get rid of any ambiguity. Thank you!