What does it mean as a writer when you're proofing and start to cry over a scene you wrote?
You have to be careful with such scenes because it is possible that readers (even those who know you personally) will not react emotionally as you do, and besides being disheartening, that clouds your intent for the scene in an objective POV. For example, the author wants the "loss of dog" to explain why the MC snaps at his wife and ignores his children over a long grieving period, but a reader, who may even have owned and lost many dogs, will not react to a dog's death as you do, being more like a replaceable loss of property to him, so the author would for that reader be in an awkward position of having to explain the grieving process of your MC whereas it is better stylistically to leave it as understood.