One should be aware of the risks of developing a dependence on a job which may become redundant, because of corporate layoffs or technological progress. One example of this is that if you were a biochemist who got a PhD in genome sequencing, machines put you out of a job.

A consequence of reducing your long term career risk may be that you will have lower income (at least in the short term). You may believe that individuals have the right to maximize their short term income; but does this desire impose a responsibility on their employer not to fire the profit maximizing individual?