The reward of working with the amazingly brave children and their families far outweighs the sad days.
I have been a nurse for over 22 years. When I was 8 years old, I had an Aunt die of cancer. I remember in grade school raising money for St. Jude's Childrens Hospital in TN. I always believed that was where I was meant to work...pediatric oncology. UNTIL...I got to that rotation in nursing school. I had several patients over the 16 week period. I remember every single one. The 10 year old boy who begged to be let out on a day pass to visit Disney World. The 3 year old that showed me not only what a "g-tube" was, but how to properly clean and dress it. A 16 year old athelete with osteosarcoma that did a photoshoot with her mother so mom would have "last pictures" with her. I to this day salute the pediatric oncology nurses knowing I would LOVE TO be a part of their ranks. I am currently doing an oncology rotation and MAY be ready in the next 5 years or so! ;)
All this is meant to say is that you may have a different passion once other opportunities are presented. Never close a door early! I hope this helps!