I think people get into the mindset of needing to go nuts when exercising/health or they need to be at a gym. All they need to do is be active for about 30 minutes each day by going for a walk or biking.

Many cultures and countries ranked as healthy, and I mean overall like children to elderly are places where people walk everywhere. They aren't all power lifting or even going to gyms.

Strength training is good but overall daily activity is best.