I agree with most of your comment but I disagree with that. I think you have to define what a "joyless, professional" work environment really means. To me, it means nobody enjoys their work, nobody feels challenged, nobody feels heard, rather everyone is just a cog/code monkey. If that's the case, throwing in some nerf guns and free soda won't change anything.
However, to you, a "joyless, professional" work environment seems to mean one where people aren't friendly with each other, and nobody has any fun when they're at work but not currently working. In that case, some toys actually might help a good deal.
So I guess it's a subjective topic and both are equally valid definitions depending on your values.
Bloody hell, that sounds so depressing when you put it like that...
I run my own business these days.
So worst case scenario, in a week, I spend 50 hours at work and 62 hours being awake and not working. If your numbers are not in that ballpark, you probably want to re-evaluate whether all the hours you spend at work are optimal :)
You don't even need to do the math, we've all been there: get up, go to work, come back at 7-8pm, have dinner, 2hrs to do something then sleep.