Because from the point of view of somebody who's spent an extended period in hospital, it's very apparent when your stuck on your ward over a Saturday and Sunday that the care / facilities available are somewhat different from that you get in a Monday - Friday.
Believe me, I've experienced it and it wasn't nice.
I agree with the governments idea not with how they are implementing it nor with the Junior Doctors resorting to strike action.
this
I've been admitted to hospital on a Friday morning and then discharged on a Saturday... on the Friday it was great - registrar was really switched on, consultant came around with a small pack of junior doctors following her etc.. they got me sorted, kept in overnight. At one point on the Friday night I had a question and the nurse didn't know but said it would be OK as tomorrow the consultant would be doing the rounds and I could ask then - then corrected herself and remembered it was Saturday tomorrow.
the Saturday was a cluster**** - nurses arguing over what medication I was to be discharged with, someone from pharmacy phoning the nurses station to get a doctor to confirm as they weren't happy... unfortunately not many doctors around - one junior doctor appeared later. Got discharged but the stuff the consultant wanted to be followed up with never happened - nothing in the post from them, went to see GP and GP had nothing from them. Ended up going private.
while it is pointless having elective or routine operations on a Saturday or Sunday I do think that a 7 day service in other areas would be beneficial - such as in the wards people get sent to after being admitted to A&E. There was quite clearly a decline in service on the Saturday compared to the Friday - on the other hand the government does need to pay for this, they can't just assume it can all just work with the same budget