Lenders may not offer reverse mortgages on some types of properties (e.g. farms, retirement properties).
A reverse mortgage allows you to stay in your home for as long as you wish, but it requires you to reside in the home or sell it. You cannot rent out your home and travel, or move into care, without selling the property and repaying the loan.
Since you aren't making regular repayments on a reverse mortgage, the effect of compounding interest can significantly increase your loan balance. This can erode the remaining equity in your home. Depending on the housing market at the time of sale, this could result in a substantial financial loss.