Did you buy your house with cash or a mortgage? In some countries, mostly developed ones, the policies in place almost always make it a silly choice not to take on a large amount of debt to buy your first house. Even if you have the cash, it's always wiser to invest your money elsewhere and use the investment income to pay for the interest part of the loan.
Avoiding debt is good advice for 90% of the population who can't plan or understand long term commitments relative to their income level. When you understand and internalize that debt is simply a trade of cash flows (you get money now, they get money over time) that can be beneficial to all parties involved, you treat debt as a tool. Sometimes it's useful, sometimes it's bad, depends on your situation. When your debt starts to accumulate, it means that your prediction of future cash flow was wrong.
Avoiding debt is good advice for 90% of the population who can't plan or understand long term commitments relative to their income level. When you understand and internalize that debt is simply a trade of cash flows (you get money now, they get money over time) that can be beneficial to all parties involved, you treat debt as a tool. Sometimes it's useful, sometimes it's bad, depends on your situation. When your debt starts to accumulate, it means that your prediction of future cash flow was wrong.