2) find another career I like (currently biological research), and do art on the side as a hobby
-higher income, more secure, less uncertainty
-I don't run the risk of getting tired of art because I do it for fun
-oh and I get attached to my art and don't like the idea of selling something I really like
-as much as I like art, I don't have a passion for it like I do for nature...I know I'm heading in the right direction, at least roughly
3) combine the two fields with some job like medical illustration, which I still consider, though not that seriously
I didn't, and still don't see any downside to choosing the second option.