Goblins are best because they are most flexible creatures ever made.u can kill,counter,fuck,eat and shit them and they will still kick ass!
Oh REALLY?
Wrath of God
Damnation
Ghostly Prison (Murders Goblins. What do you do if I have three of them in play? You'll SIT IN A CORNER AND CRY BECAUSE RED CAN'T DO ANYTHING AGAINST ENCHANTMENTS)
Starfall
Any other mass removal which gives me time to get large blockers up
White Weenies with which to block a rush (Goblins usually don't trample)
What if I'm running red, too, and play Goblin Pyromancer? All your (and my, but presumably you have more) Goblins get +3/+0. Then, at end of turn, THEY ALL DIE, leaving you open to my Elementals/whatever the heck I have in play to attack you (because I use more than just Goblins)
If I can survive an initial rush (which I can), what do you have left? Cheap, little goblins. Good in numbers, but not when I have big blockers (like, over 5 mana cards)
I will then have larger, better spells and creatures with which to block, kill, and win.
Sorry, man. Goblins can be really good, but they aren't the best. Nothing is "the best." Don't go saying that. There is more than one way to win. The game is balanced. Goblins can be beaten.