Facts: the people who made me happy are no longer here. And they would no longer be interested in making me happy.
Memories are just that. Memories. They will not happen again. They just stay with you, like shards of glass embedded in your brain.
Crying will not make things better. It will not make you feel cleaner. It will only make your eyes hurt and remind you that he is no longer here to wipe your tears. And even if he were here, he wouldn't.