Referring to a human as a "roach" is a derogatory and offensive term. It is an insulting comparison that dehumanizes the person, implying they are worthless, dirty, or insignificant, just like a cockroach. Calling someone a "roach" is meant to belittle and demean them, and it is highly disrespectful.
Using such language is not appropriate and goes against the principles of respectful and empathetic communication. It's essential to treat others with kindness and understanding, avoiding hurtful language or derogatory terms that can cause harm and perpetuate negativity. Instead, we should aim to promote understanding, empathy, and constructive dialogue in our interactions with others.