My compassion and empathy for my fellow humans.
Being religious/non religious alone doesn't make you concerned for the sufferings of others. This is a trait you can find in people (to different extents of course) regardless of their religious beliefs. So, putting aside those people who care about other people because of their "compassion and sympathy for their fellow humans" , we are left with people who are not altruists. Now we have religions which ask their followers to do good, they warn their followers of punishment and promise them heaven. And this could work. Religious people would "try" to do good because they are scared of punishment. As ridiculous as it may sound, don't you think the final outcome is richer in this case?
Like a student who studies because he loves studying vs a student who does his homework because he's scared of the teacher's punishment, because he is too "weak" to know it's the "right" thing to do. With a teacher, we have two students who study, without him, there's only one.
You don't need religion to be a good person, to have pity for the misfortunes of others, but religions are good for the most part because their teachings
can show their followers the right path when the "compassion and empathy" bit wouldn't work well.