Here's why I like them:
- High survivability. The likelihood of losing troops in this attack is low, meaning that you can quickly move onto the next attack. Try that with riflemen or warriors. Spend less time waiting and more time dominating.
- Invulnerable to nearly everything. Yes, you have to take out the Boom Cannons, and that might be a strain on your Gunboat energy. But with constant heals coming in from the medics, your tanks are pretty much unstoppable.
- Pew! Pew! Pew!