I always choose water starters no matter what gen it is. However, some of the grass starters (like Bulbasaur and Chikorita) would be considered.
Gen 1 I think I usually go with squirtlenGen 2 I go with cyndaquilnGen 3 I go with mudkipnGen 4 I go with piplupnGen 5 I go with snivy or oshawottnGen 6 I went with froakie
1st Squirtle 2nd Cyndaquill 3rd Torchic 4th Piplup 5th Snivy 6th Fennekin
I'm pretty diverse with the types but fire is still 3 out of 6.
I've only played gens 2, 3 and 6 so far.
1st - Charmander/Squirtle (I like both equally) 2nd - Chikorita 3rd - Mudkip/Torchic (I like Mudkip better, but I like Torchic's evoltions over Mudkip's) 4th - Piplup 5th - Snivy 6th - Fennekin
Gen1: Bulbasaur Gen2: Chikorita Gen3: Mudkip Gen4: Piplup Gen5: Tepig Gen6: Chespin
I do like me some grass types. c:
I have absolutely nothing against Fire types T______T I just seem to always love grass and water starters.
I really do love the grass-types too, I just find Fire-types can be hard to come by in some games, and I'm just more partial to them.
I uh...I don't hate the fire starters...I just like everything else more. >>;;
[img align=center]http://i.imgur.com/bvyZQPq.gif[/img]
I like to think I don't have a bias in starters but I clearly don't favour water types.
Mine looks to be pretty balanced, I guess?
the fully evolved forms are my favorites!! i really have a thing for reptilian & bird pokemon also, i haven't played x & y yet so i can't really name my favorite 6th gen starter, but i'd probably go with froakie!
[img align=center]http://i.imgur.com/6Yp07H5.gif[/img]
Bulbasaur Totodile (this is the hardest choice for me, I really like all three starters) Treecko Turtwig Snivy Froakie
I love reptilian things, so I generally choose whichever starter best fits into that category. :)
Charmander, Cyndaquil, Treecko, Chimchar, Oshawott, Chespin Fire-type Starters are almost always my first choice with Grass usually being my second. My rivals always use Water-type Starters against me, which may be why I rarely use them. XD I like the Gen 2 starters the best because they are so cute and have awesome final forms! :3
Because nothing makes me happier when things are so bad they achieve a new level of awesome! :3
Charmander, Totodile, Treecko, Piplup, Snivy and Fennekin. Pretty balanced =P
gen 1: as kid always squirtel, now bulbasaur gen 2: cyndaquil gen 3: as kid torchic, now treecko gen 4: turtwig gen 5: snivy gen 6: chespin (i also like fennekin a lot tho)
I go almost completely based on looks. I do't IV train or any of that time-consuming insanity. So:
1st Charmander 2nd Chikorita 3rd Torchic 4th Piplup 5th Oshawott 6th Fennekin
I'm not a big fan of grass types, I guess haha

Originally I think my first playthroughs of the main generations of games went something like this; Gen 1 - Squirtle Gen 2 - Totodile Gen 3 - Torchic (Charmander for FR/LG) Gen 4 - Turtwig (Cyndaquil for HG/SS) Gen 5 - Tepig Gen 6 - Fennekin (Torchic for OR/AS)
Lately I've had more of a thing for Fire-types, but I've always loved Pokemon that looked bulky and intimidating - Feraligatr, Torterra, Emboar are prime examples out of my starters. They also happen to actually be bulky because they've got some kind of substantial defensive stat that lets them take a hit or two.
... I seem to have an addiction to the grass starters up until gen 6. o.o But out of those starters, Chikorita's my favorite of the grass types--mainly thanks to the female one I got the very first time I started up HeartGold. ❤ Nicolette is still with me today, though... stuck in HG, since I can't transfer her over. :c And out of all of them, Fennekin's gotta be my favorite, with the way my Delphox Naegi can help me through any situation.
I dunno, I just get really attached to all of my starters. I still even remember the very first starter from the very first core game I played! (a treecko in Sapphire that I named Kalos, no joke. And this was back in 2004, way before ORAS)