Is the milky way really large or is 200 years a really short time? Galileo was born only about 164000 days ( ~ 4 million hours ) ago. And that's already over

Is the milky way really large or is 200 years a really short time? Galileo was born only about 164000 days ( ~ 4 million hours ) ago. And that's already over twice as long as 200 years. It makes me sad when I think about how a life time is a mere thousand months.