Odds of Hanging On
Biosystem engineers spend a lot of time looking at data—we're talking volumes upon volumes of the stuff. And what's more, it's constantly changing. Every year brings an assortment of new annual averages, and every natural disaster converts a well-studied, well-understood geographical region into freshly fertile land for harvesting new stats.
If there's any danger of you not sticking around in this career, it's coming from the risk of going batty from all the numbers. It certainly won't be from getting pushed out.
Considering the fact that job placement of graduating majors is through the roof, chances are the world just flat-out needs biosystems engineers. And a lot of 'em. So as long as you've got the know-how, you'll make the dough-how(ever long you want to).