Sitting and typing at a computer all day isn't particularly healthy either, for what it's worth. I do recognize that standing desks can mitigate this, but it's even tough on the wrists.
Several of my family members work in the trades. The level of damage done to their bodies is way higher than any desk job and you can at least somewhat mitigate the damage in a desk job. My cousin is a bricklayer and has severe medical problems in his 30s (though he does earn more than me).
