Comment by hansmayer
Well I guess for a lot of people it would be self-explanatory, but if I go outside to a park, or to a coffee-shop, or whatever - I go there to enjoy myself, not work. Apart from that, I would not really have the ergonomic benefits of my controlled working environment, not to mention bugs, people walking by, random noise or whatever it is.
I suspect that's a personal bias. If you go to most any cafe (at least in the US) there will be a half dozen people there typing away at their laptops. This is even more common with the rise of remote work where people will (for better or worse) commandeer cafes as their personal office.