I know, I was lucky.
Most aren't.
But I kept an open mind, actually struggled and debated with pursuing other fields during third year (since I liked almost everything).
In the end, the same things that attracted me about surgery stayed true: good variety of patients (old and young, male and female, critically ill and relatively healthy); the challenge of a difficult case; developing your technical skills; being able to plan out an operation and then actually open someone up and see the pathology firsthand; the ability to "heal" or "cure" or help alleviate someone's suffering almost instantly (in surgery we LOVE instant gratification, and we're all relatively impatient!); the diligence needed for good peri-op care; being one of the few fields where you have to gain the patient's (and the family's trust) instantly - one minute you're meeting them for the first time in the ER with a severe surgical problem, two hours later your hands are in their body...
All great stuff.