So in all curiousness - why is "somebody else"'s world changing mission such a big deal especially when it demands sacrificing ones family/health/stability etc?

So in all curiousness - why is "somebody else"'s world changing mission such a big deal especially when it demands sacrificing ones family/health/stability etc? (let us not even talk about layoffs). This idea that I cannot be professional (and do my job) unless I buy the koolaid feels very orwellian!