Saves enormous waste of radio sets, and consumption of extra power both in use and for manufacture.
No compulsory switch-off of FM transmissions to compel us to change to digital, making our many FM receivers useless.
Digital uses much more power, and incurs considerable capital costs [sets are much dearer], with no way of recyling the old radios. Will not be able to go from one room to another set with continuity of programme. Music will be less faithfully reproduced.
Also, the Time Signal will be wrong!