You would have to buy a Dratini from the game corner, which might take a lot of grinding, and then you will have to level it up. The reward is great, but the effort required is a lot. With that said, Dragonite has impressive stats much higher than other Pokémon in this generation,...
candy you earned was specific to the Pokémon you hatched, caught, evolved, or walked. For exceedingly rare Pokémon, like Larviatar (including Pupitar and Tyranitar) or Dratini (including Dragonair and Dragonite), it could take weeks or months to get enough candy to fully evolve or power ...
Granted, it does make things suck, but I'll just grind a Lillipup to level 16, have potions ready, and use my starter for their Lillipup. Of course though, I have one other core aspect that makes Pokemon fun for me to use: How hard they are to obtain. Trust me, I will do ...