I chose Torchic for Ruby just because I really like fire types (although I didn't get very far in training it, I consider Wingull my 'starter' xD). And I chose Bulbasaur when I first started FireRed, I have no idea why. I ended up regretting my decision and since I hadn't gotten very far I restarted and got Charmander. I love Charizard, so that's why.