I believe what it is is, is for pretty much a minimum of 50% of the year we get rain, cold, hail, fog, damp, and just generally grim weather in this country. The most we are likely to get (in the UK,) that is proper nice, is 4 months of the 12. And some people will be stuck inside at work for some of that!!!
So when we do get a really nice weekend, it just seems ridiculous to be stuck in 'watching box sets' and 'playing video games' and sitting watching telly or playing board games.. It IS a waste of time and it IS a waste of nature, outdoor activities, and fresh air and sunshine, (and the opportunities to go for walks. Walking is very good for your mental health and physical health.)
And yes, I do judge people stuck in their house for the whole 48 hours of the weekend when it's glorious sunshine. Why on Earth would you?! Especially if you have got children. At least get in the garden! And keeping your kids in?! Why? Why on earth do THEY not want to go outside? Are they learning from you?!
These 'CBA to go out in the sun coz why SHOULD I just coz other people do' people, are the same ones that will be whinging and moaning and crying into their coffee, when the summer holidays come, and it ends up pissing down for 80% of the six weeks and they can't get out to do anything. I've seen it happen before on here.
Oh and @Nayouknow YABU. I would rather be part of the 'out and about brigade' than the 'stuck in the house when it's sunny and warm outside brigade!' I'm off out in about half an hour, (to a Nature Reserve,) with DH. It's beautiful here, and like hell am I staying cooped up inside when it's like this!