I Love pretty much everything about Harvest Moon
but here's my explanation why:
1.Marriage- where can you find a game where you woo a girl or boy, have romantic dates, have rivals with the person you love (I hate them!
) XD), propose, marry, have a child?! Harvest Moon is..and I adore HM for that
2.Farming- HM is like the offline version of FarmVille..but waaaayyy cooler. haha. HM made me realized that growing crops and taking care of animals was fun(but in real life, it's exhausting)
3.Story- every HM game has a unique(sometimes the same old story) but HM story is always amazing!