No one really knows what the future holds. With the quantum computing evolving more and more, in future we might move from bits to the qubits
Aim for a proactive approach to manage it. If you store your photos on CDs and see that it's harder and harder to buy new CD Readers/Burners, then consider moving to another solution. If you store your photos in format XYZ and is getting harder and harder to find applications who can work with this format, then consider converting to another format.