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.
Its not necessary to use your own money to invest or earn cryptocurrency because you can still work on bounty campaigns here in this forum and earn altcoins after the end of token sale. Most of the people i knew are just preferring to work more than using their own money.
Yes, but by working on these bounties and micro tasks online it doesn't guarantee you a large amount of money to start investing decently. It's surely better than nothing, but if you have an initial amount of fiat to invest since the beginning you will save a lot of time and effort. However I think it's too risky to borrow money to buy BTCs, especially if you are borrowing money with high interest percentage to pay back, very common on banks...
Better to save money and use this amount to invest, but never borrowing money from third party services or people.
Two main reasons to not do this: you will have to pay the money back with interest, BTC's volatility might not help you on short term.