I have one of those conditions which entitles me to free prescriptions for everything. Whilst a lot of things are interconnected and compromised by one initial condition (one reason why I wouldn't bother with life insurance, even if anybody would sell it to me, because almost any non-accidental cause of death could be attributed to have been triggered or exacerbated by the basic condition), it is ludicrous that, if I developed a fungal toenail, I'd get my treatment free, when somebody with asthma has to pay for their inhalers.
They probably figure that it would be a minefield to decide whether something could have in any way been a result of the basic condition or not, so it's easier to just say all prescriptions are free. Why they don't simply get rid of the other minefield of the 10% or so of people who have to pay and make them free for all, I don't know. As the Welsh PP said, it costs as much to administer as they would 'lose' to make everybody exempt.
I can't help thinking it a sad state of affairs that there are whole departments tasked with checking up on people and sending out fines to people who have had much-needed prescribed medicine and not paid for it. Yes, they've broken the law, but it's hardly up there with bank robbery, is it.
There have also been instances where people with a condition which qualifies for automatic free prescriptions, but who haven't realised that they need to send off for the exemption card (or have accidentally let it expire) have been fined for 'fraudulently' claiming free prescriptions and subsequently had their appeal rejected.
This will be an unpopular viewpoint, but I think the very fact that pre-payment certificates actually exist is, in itself, in very poor taste. Yes, if people regularly needing a number of items can avoid being whacked for an absolute fortune, it's much better than the alternative - but it's also an acknowledgement by the government that many will struggle to pay, through no fault of their own, so we'll ease their struggle, but we still want to make sure that they do still struggle to an extent - this is very important to us that some of the people in society who suffer from the poorest health shouldn't have access to their necessary healthcare without any worries at all.
As has already been said, it's silly to compare it to the price of coffee at Starbucks when, for many, it can be a choice of getting their medicine or eating at all. Compare it with the recent outcry about removing free TV licences for over 75s who are not getting pension credit. Not saying that over 75s should have to pay, but the cost is not that much more each month for entertainment than for potentially life-saving medicines.
Wearing my cynic's hat here, I do wonder if the decisions are made purely with regard to the long-term cost to the NHS rather than the needs and well-being of the individuals concerned. e.g. if a person with diabetes had months where they couldn't afford to buy their insulin, that would lead to a lot of very expensive hospital treatment over a number of years; whereas somebody with asthma who couldn't afford their inhalers might suffer a massive attack as a direct result and simply die within minutes.