Over shabbos I heard a story in the name of R' Fishel Shachter (I think). He said he once woke up at 4 am to pick up a family member from the airport, and after he left his house, the person called him and said that he got a ride from the airport, and didn't need to be picked up. R' Fishel was left with some extra time, so he stopped at the bakery to pick up some bread for the day.
While he was in the bakery, R' Fishel saw an acquaintance walk in, pick up a cinnamon danish, and go to the counter to pay for it. Surprised at why this guy needs a cinamon danish at 4 am, he asked about it, and the man told him that he was just arriving home after a late-night Seudas Hoda'ah in another city, for someone who was in a terrible situation for many years, and just had a yeshuah. Pressed on how he knew the person, this man admitted that he didn't know him well, but felt immense simcha at his yeshua.
Pressed further on why he needed a cinamon danish at 4 am before he went home after a long drive, the man said that he's always loved cinamon danishes, but when he heard that a fellow yid was in terrible tzaar, he decided that until this person is saved, he's not going to eat a single cinnamon danish. Now, years later, on his way home from the person's Seudas Hoda'ah at 4 am, he simply had to stop at the bakery to pick up his first cinnamon danish after so many years.
This story was told over by my Rav, who spoke about the concept of Imo Anochi B'tzarah. He said that even putting aside the fact that feeling their pain helps us in our davening, being together with our bretheren in their time of tzaar is itself worthwhile.