Frequent regens = more miles and/or more pedal to the floor action is required
I have to give the TDI a good ragging once a month as the missus dribbles along the road in it, so the EGTs never get hot enough to clean the DPF naturally.
Driving a diesel hard pays off in the long run as DPFs will then last forever. Town only diesels need DPFs far more frequently because they get clogged up beyond hope!