Yes as the subject said, using borrowed money to buy bitcoin is not good idea because the interest is accumulating every week/month and you don't know when the bull will come and even if you know, you will not know how much it will be. And assuming you took a loan of $400 to pay back within 3 years and the interest rate is $2 weekly and in the 3 years period, bitcoin has not reach the speculated price to sold your bitcoin to pay your loan. Or when you sell, you get the exact amount of the loan, or 1% profit from the sell and you pay off the loan and there is nothing left for you to start over. Is that a good investment? No. So there are many factors one can consider before using borrow money for bitcoin investment. You have to consider the duration of the loan, the probability outcome of bitcoin at the end of the loan year, and the interest rate accumulated at the time to pay back the loan.
When you have done your homework well and you see that you can use the loan to invest on bitcoin and there will be no problem at the end and you will have some changes remain in your wallet then you are free but if not, it will shock you and you will be frustrated so prevention is better than cure as they said. Therefore using loan for investment is not advisable. Ordinarily, you cannot just come to the cryptocurrency Ecosystem space without proper planning and started investing, it is not done in that way, at least calm down to study how things are done in the environment, making some analysis, compare and contrast some of the risk involved then if it is good then you key into it and if it is not then you look for an alternative way to invest in bitcoin.
I came up with this topic because I was planning to borrow money to invest in bitcoin but when I looked at the risk involved, I have to give up the borrowing plan.
You have made the right choice, but if you could able to borrow money where you don't have to pay interest then it's not a bad idea. Many relatives, friends could lend you interest free loan. But that's not for sure because in our culture and religion most of the relatives and friends do not lend loan to each other with interest. But, still my suggestion is not to take loan for investment either it's the investment in BTC or in any other project.
Things could turn up side down if the price didn't turn up as you have calculated. So, to live a relaxed life you have to think from all angles at least from some.
I back in 2018 thought of borrowing some money and to invest in BTC, and the interesting thing is loan would be interest free but still i dropped the idea. But i would took the risk i would have a lot of profits now because the price of BTC at that time was too low. Hmm What we can do if a gain is not in our luck. So do not regret while you are still in the profit.