I'm afraid you don't decide what comes across as hostile. Things can be discussed in many ways, yours is one of assuming to hold all the answers in a conversation with a stranger you know very little about. I would reconsider this. You don't know what I was buying, for what reason, or if there was a realistic alternative. You just say "you weren't born with it", and "it's the truth". An unconvincing way to argue whatever point you actually have.

Those things are not mutually exclusive? You can say to someone "I want to punch you", and that can both be the truth and hostile.

...and yes, you're being extremely hostile. There's a reason you got banned off of that other site...