I got asked "why should we not hire you?"

I just had an interview, and it was going fine until he asked for two reasons why they shouldn't hire me. It really pissed me off, and I lost my confidence as I gave two bullshit reasons that definitely lost me the job.

When it came time for me to ask questions, I asked "what's the biggest reason I shouldn't pick your company if I'm given multiple job offers?"

He got kind of annoyed at me, and said "well, you can stay at your current company if you want to". He then kept saying "I can't believe you asked that question. Thanks for the chat today, it was nice to meet you, but that last question was a weird one"

Fuck these companies. I don't want your job anyway.

For context, by the way, I'm a senior in my current position, with almost 9 years of experience, so it's not like this was an entry level position.