With regards the over-70s, they may be of a similar mindset to my parents who, although they're self-isolating, have said that they'd prefer to get something and die relatively quickly than end up at the mercy of the care system later on. I can kind of understand that PoV.
But, those that aren't isolating aren't considering others, are they? So it's selfish behaviour which I can't understand.
FWIW, Liverpool was dead yesterday lunch time when it's normally really busy, so people are taking notice.
I'm WFH for the foreseeable future and once the kids finish tomorrow we'll be pulling the drawbridge up and riding it out as well as we can. It's scary, but we need to stay calm and not worry the kids as trying to maintain an air of normality when it's really not normal is imperative for their mental health.