My cat is the ONLY thing that has stopped me, but he's young (I wasn't contemplating suicide at all when I adopted him), and he literally could be around another decade or more. I can't imagine being here through next month, and I doubt I can make it another year because my health is rapidly declining. There are days when I can't care for him properly because my pain is so bad.
They're all so innocent. Like @Smart No More said, it is cruel and traumatising. For me, it's also hypocritical.