I understand where you're coming from OP. I followed the rules to the letter for most of the last year. I have been cautious and careful.
When I was told I was suddenly CEV instead of just CV I didn't make a fuss, despite being in work in a busy schools between September and December where cases rocketed and, at one point, more than 500 students were isolating.
In January I was told to shield until. March 31st which I duly did, though it made my job so much more difficult and I was working long into the night.
I went back to school for one day on April 1st. A student in my form tested positive and I had to isolate for 10 days. So the plans I had made with my parents to have an Easter Sunday dinner in their garden, and with my sister who I haven't seen since before Christmas, vanished.
My leave from work coincided almost completely with having to isolate.
So I'm allowed out now. I've been back at work for two weeks. In that time I've been in shared classrooms, in proximity with dozens of students who forget their masks, been handed things, been squashed into corridors with other people and been teaching with a face mask on to rooms full of kids with face masks on, many of whom use them to misbehave.
I have nowhere I want to stay overnight really, but given the above, if I did, I honestly can't understand in the slightest why that would be a greater risk than all of my daily routines.
So, I probably would if there was an opportunity.
I know lots of people who take risks maybe don't calculate them, but lots do. And as PP have said, the date is arbitrary and nonsensical. People are being forced to do the banal and the tricky and give up the fun.
I can't get upset about people planning the fun