Bitcoin investment is not always good to borrow money for its investment, but one can choose to borrow sometimes depending on the situation of things at that particular time. Business is full of risk, likewise investment, and bitcoin investment is just like any other investments which are open to risk. So, if one can borrow money for other investments, there is nothing wrong with making such trial.  l think the most important thing is being very careful, knowing a lot about bitcoin and its record, and then know exactly the right time to make such investment.