If you can get a greater return on your investment than the cost of servicing the debt, including payment of interest and reduction of principal, then it's foolish to not do this.
Why not use somebody else's money to fund a project instead of your own?
Look at the majority of homes that are purchased by borrowing money for a mortgage. This allows people to buy a home they would otherwise never be able to afford. As long as you can service the debt, it can be a great thing to use debt financing.
not today not today too many fingers in the pie some of us used to be mechanics plumbers bricklayers carmakers carpenters even candlestick makers now we all are in finance and the dog