Not really. The question one should ask is how it makes you a shitty person?
Wanting to CTB is human, even if not what we consider "normal" in nature. When you experience situations that become overwhelming, one can't help it but feel the only thing that would help is to die. That is not a bad thing, you're just expressing that it's overwhelming, and for some, dying is the thing that will no longer make you think or feel a thing anymore - because you won't exist. The thought brings peace to many of us. For the pro-lifers who claim it's selfish, are themselves selfish. After all, why would some other human have control over your bodily autonomy? Life is a choice.