Incidentally, for me it wasn't the taxonomies, but rather a teacher who was overly critical of me. He kept insulting my drawings, and since it was India, your parents too join in the "fun". For high school, I switched my stream to computer science almost immediately. It was only in my final years in engineering school (chemical engineering) where I began to get into Machine learning applications for biological processes under a really enthusiastic and encouraging professor (who ended up being a coauthor on a number of papers), that I really began to rekindle an interest in biology.

Funnily, earlier this year, my now-fiancee prepared for and wrote the MCAT, and since I sat along with her during her prep, I decided to give it a shot too, in spite of my relative lack of prep and a full time job on the sidelines. Managed to score a neat 514. Turns out, having a good teacher matters a lot.