Those are all still pretty subjective questions.
Industrial design isn’t a bad career. Will you go home every day at 5:00? Probably not. Will you risk missing your daughters dance recital because you have to fly to China to approve a tooling change? Maybe.
I can tell you from IDSA conferences and other design events, overall designers are pretty happy, optimistic, alcoholics who deeply enjoy what they do.
If we didn’t love what we did, we wouldn’t spend all this extra time talking about it on the interweb. 