I asked this question in what I assumed would be transparent sarcasm.

It’s apparent that I need to point out that this is a sub aimed towards ambitious people chasing their dream business/job/hobby/dream/interest/etc.

There might be a bias here towards thinking a strenuous job is normal, just because we might take in that level of stress voluntarily

A lot of 75 year olds play golf, and walk the course, 160+ days each year.

and dangerous for us?

“On the road” could easily mean (and IMO most commonly means) flying from their home city to a client site or sites.

Even if driving, most 75 year olds are competent to drive and especially those still capable to work a travel job.

Flying 100+ days a year isn’t physically demanding for someone over 75?

These are airliners not tactical jets. An airport isn’t dramatically different from an office building in terms of physical demand. Being at a client site 100 days could be 50 flights if you’re on a typical Mon-Thurs consulting schedule and home every weekend.

Flying that often, you learn how to make it easier. For out Sunday back Thursday night trips, I can travel in a backpack if I have to but usually used a 15-pound roller bag. Hardly the stuff of special forces and less strenuous than a round of golf, which plenty of 75 year olds do.

My in-laws are ~75. If you looked at them or watched them play one of their 100+ rounds of golf (walking) a year, you’d probably guess they were early 60s.