Fire is losing the poll!? Wow I've always thought Fire was like one of the most popular types ever along with dragon.
Anyways, I choose Water. They're easy to train and I always keep one on my team. Almost all of them learn Ice Beam (lolkeldeo) so they can deal with their weaknesses and a bunch of em learn Earthquake too. Best of all is, they're so damn cute. One does not simply look at Pokemon like Totodile, Surskit, Lanturn, Wooper, Tirtouga, Seel, Slowpoke and Psyduck and not go "awww". The only type with cuter Pokemon would be Bug. I do have complaints about them though and the main one is that they're awfully slow. None of the water starters pass 78 speed. What is this, GameFreak?
Next would be Grass because green is an awesome colour and I like a lot of their designs, especially the Snivy line. They're kinda hard to use, because there's bugs and birds and other grass types and poisonous bugs and Sewaddles everywhere and Grass-types have sucky movepools.
Fire is bland and boring to use and I don't like em :P