i am currently doing my IM core clerkship, and I HATE IT. I hate it, I hate it, and I hate it. Every day I follow around 15 patients, and I am "on-call" q3, and I hate every second of it. I really cannot see myself going through 3 years of IM residency. On the other hand, I am really interested in "studying and treating the heart" (aka Cardiology). The heart, as an organ, just fascinates me. So, should I close my nose, and shut my eyes, and endure the hell of going through an IM residency, just to do a cardiology fellowship? Is it worth the sacrifice, given that cardiology is very competetive, and that there is no guarantee that I will end up doing cardiology?