Six of one and half a dozen of the other. I do two days from home, three in the office.
Some meetings need to be F2F, community is important, sitting next to Nellie is a very effective learning tool. As a senior manager I find it takes far more time to teams someone for quick info or a quick heads up than a quick exchange as I walk through the office. Seeing staff is very important for knowing how they are/what's going on.
I like the separation that comes with going in and I also value wfh if I have a Dr's apt/Dentist app/boiler service, etc.
WFH is easy for me because I had a dedicated study, good Internet and can afford to have the heating on. Going in is also easy because I can park at work and it's 25 minutes in the car. I might feel differently if travel took 90 minutes and involved two trains and a bus.
Overall different strokes for different folks and they work when there is motivation and strong leadership.
DD has all her teaching this year on Monday/Tuesday and Thursday/Friday. Her school is flexible and she does her prep/marking/admin at home on Wednesdays which is a massive flex on the part of the school. BUT she flexed and agreed to teach seven sessions on Tuesdays to support them and is the go.to in emergencies.
Overall I think people need to be careful what they wish for and fir those in London/SE I think a switch to fully remote working will lead to new contracts without London Weighting and changes to other benefits being introduced.
Honestly though I am still working full-time in my mid 60s. I don't think I could do it if I had to go in using public transport five days a week.