I Cry During Sad Movies

There's a few movies that end up getting me misty eyed, but the one that hits closest to home for me is Big Fish. My dad always told stories about his experiences during WWII while I grew up. I completely understood why the son in Big Fish feels dejected that his dad's old stories were things he cherished more than him. But at the end when the father is in the hospital and he tells the son to finish his story, the tears start rolling. I've only been able to sit through it twice because I'm always scared at the emotional impact of the ending of that movie every time.