This sounds nice, but it's still our loss. You can remarry. Reminding mourners of their advantages seems to devalue their genuinely painful grief feelings. Grief is a selfish time, and though that may not be polite, it is real. You need to forget about the past and get on with life.
Life is for the living.
Don't be afraid. Or any other 'don't' feeling. I know just how you feel. This is classically the most offensive thing bereaved people hear. No one knows how another feels.