What is the hardest choice that pit one persons needs against another's that you ever had to make?

I think the most difficult choices place together two goods that are fairly equal. Perhaps if you choose one way, these people get hurt, and if you choose the other way, another set of people, including yourself, get hurt a lot more deeply.

What was the hardest choice? The one where you had real difficulty deciding was best—hurt your friend or hurt your lover, for example. Like staying near your kids to be with them when they are young, or taking a job that would keep you away for years at a time. Like joining the armed services to protect your country at the expense of your spouse, your marriage and your children.