Well, I'm not exactly young either, though my engineering and mathmatics education tends to help me adapt to metrics. 😉
Molly is still my favorite player and I'm so sorry that you missed 1987 and Team Streak. Still the most exciting team that never made the playoffs... (yes, I'm still bitter that they had a better record than the Twins and didn't get in the playoffs on a year the Twinkies won the WS).
The funny thing is that metrics are all based on stats, so I'm not sure the comparison there. Now there are a TON and not all are cracked up to be what you'd expect and you need to understand their weaknesses. But they have gotten much better. They also help small market teams like the Brewers (that are very metrics-based) compete. The days of Sal Bando guessing badly on draft day are long gone (thank GOODNESS!!!).
The funny thing is... watching baseball, I knew Yount was good, but he wasn't a big HR guy so I never quite understood why he won two MVPs. Likewise, I'd see Gumby hit 275, but still not look like he was contributing much. Then someone figured out OPS (and OPS+)and WAR.... suddenly you see all of Yount's value built in the 2B and 3Bs. While Gumby proves himself to be an empty singles hitter.
Good metrics match what is seen... but also quantifies it so you can compare players more directly - even in different eras (i.e. ERA+, OPS+, etc...).