There are many benefits with DUO:
1. The APR is guaranteed. Regardless of the market volatility, you earn your yield;
2. There are no additional fees, rollovers, etc.
3. The number of units you receive from your DUO will increase, even if the value of the payout token decreases, thanks to the guaranteed yield. This provides an opportunity for growth and increased profitability, as you can convert your payout to other tokens when the price rises, or use it to open another DUO.