I personally love working from home. I have a better setup, higher quality monitors than the bargain basement Dells provided, and a lovely mechanical keyboard that is a pleasure to type on, but would drive my co-workers crazy if I used it in the office.
I am more productive when I work from home. I have lower costs (so my "take home" pay has gone up on the same salary). I have less wear and tear on my car. I am less distracted by random questions from people just walking up to my desk, and I avoid the office politics. I can concentrate on my work, and yes I do work longer.
That is because from my perspective, work always started the moment I left the house, and ended the moment I got back (because I can't do anything else while commuting, it is effectively "work time"). By not having to commute, I added at least 2 hours a day to my life, every day, and that is a huge extra chunk of time. Even if some days I work longer than 9-6, I am still overall in benefit of time.
A few times I got pinged at odd hours (e.g. 10pm on a Friday) or on a Sunday about some work issue, so I did end up having to make it clear that I still have "me time", and that outside of working hours, or on weekends, I will not respond unless we agreed out of hours work/on call beforehand.
It even helps the environment to not have masses of people shifting themselves to and fro every day of the year just to sit in a different room.
If you think about it, the whole concept of commuting just so you sit in a different location to the one you live in is really stupid and wasteful. Yes, some jobs require physical presence, and in the days of mechanical factory work, you had to be on the factory floor to do your job. However a good chunk of our industry is now virtual, and commuting was just a hold over from before ("We always did it that way, so that is why we do it now").
I like to think that with this realisation, there would be a mass switch to remote work for those industries that can (and it also reduces the amount of traffic during the commute for those who do have to go to work, giving them benefits too).
However it is not looking good. Despite admitting that productivity is up, costs are down, and internal polls showing the majority of the company prefer remote working, my company has started pressuring people to come back to the office, so we can sit in socially distanced perspex cubicles due to Covid.
I guess senior managers like to be able to walk around "their estate" and survey worker bees in rows doing work, more than they care about the costs and drawbacks of doing so. I guess it is an ego thing, either that or they have to justify the costs of the (empty for months now) office they spent big money on to the board.
Hence now considering finding a different company that is more open to full teleworking. Is there somewhere specific where I can find companies who only do full remote work? I know from the news of about FB/Twitter for example, but no idea if they are the only ones.