Whether it be buying btc or buying equipment to mine btc. Did you ever borrow fiat to make your purchase? I have not. Just curious if anyone ever has.
No I didn't, and I would not suggest anyone to do that. That would be desperate move to earn some money, and desperate moves are never good thing in economy. Yes, we know now that 2017 was good year for BTC, but who can tell it will be same in 2018 with so many alt coins which have big daily volume and big market cap.