There are definitely downsides to office work, but this post really implies to me that you don't actually personally know anyone who works in the trades. The amount of body pain/damage, extreme conditions, and ridiculous scheduling (as in, last minute decisions that you must be on site at 5:30am the next day, not as in overall hours) are pretty much incomparable to tech work.

It's not for nothing that de facto founder of the Singaporean state Lee Kuan Yew wooed top men and women into working government jobs by ensuring the government buildings had A/C. I would far prefer an inflexible air conditioned 9 to 5 than a flexible perpetual sauna.

The only tech job that had that balance was a network engineer at the headquaters of a global company in a skyscraper with 3 offices and a datacenter in walking distance. Most of the time I was sitting around writing code or configs, but at least once a week I would have to walk to a different floor or building to wire up a switch or rack a new DNS server or whatever. That bit of required physical activity and interaction with others was always a highlight.

Actually the only job without all those problems (err,any problems?) is to b a fitness instructor or personal trainer; not on an extreme level,8h a day, but let say you have 2 clients or maybe 3 clients a day, this would be enough movement / workout to never ever run into these problems, I guess?