Guilt be gone?

I was elated to have gone to Harbin and more elated to tell my father whom I Skype daily. however, I was a bit surprised and saddened by his response. Apparently, as a schoolboy, he had passes Harbin many times by train but he never got off to see it. He had dreamt of going someday when he had more money but it seems he now must live vicariously through me.I think more then ever, I understand what my family has sacrificed for me and more then ever, I feel a sense of guilt.