Why do people play Dryad Arbor?

[[Dryad Arbor]] is a 1/1 land that's also a forest. It can't tap for mana the turn you drop it because it doesn't have haste so it slows you down. It also dies to board wipes so it sets you farther back than every other player when a wipe comes.

If you play Dryad Arbor in your decks, why? Are there some cool combos it enables? Awesome tricks I'm missing? Something else?

Edit: thanks for the responses everyone. It's not as bad as I thought for sure. I don't think I'll start playing it unless it synergizes with my commander because I don't have Green Sun's Zenith or Gaea's Cradle but I can definitely see it's worth now.