What is your least favorite type of pokemon?

Ehh, probably Fighting and/or Dragon. Raw, straightforward power isn't my preferred style.

Fighting type is a little boring, but Hitmonlee and some others keep me from putting them on my least favorite list.
Dark is annoying, but I'll keep it on my list for old times sake, so I'm going to have to go for... rock.
Yeah, it gets annoying when you're on your last Pokemon (because you weren't ready for such a hard Gym Leader) and your last one is flying type, and they use ROCK TOMB!!! Omigod, how damn annoying!

Rock and Steel types.

I never use them,and they are kinda boring.

This is a toughie. But I had to choose I would choose us rock. I don't hate rock types I just don't care for them.

I would say rock, most rock types are pretty bland.

Poison and Ice types.

Never cared much for Poison types, and I think Ice types are mediocre, defensive wise.

Water!!!

In addition to being WAY oversaturated (there are more than 10% more water pokemon than Normal pokemon, for crying out loud!!!), their primary weakness (grass) is completely offset by their near universal access to ice type moves, which gives them a combined neutral or better coverage on everything but, of course, water itself! In addition to this overwhelming offensive advantage (with ice, they are the only type of the starter pokemon who naturally inherit an offensive advantage vs dragons, who are supposed to be the big bad scary guys), they also offer the best defensive typing, with only two weaknesses! Nearly a third of all pokemon reside in the field group, but water gets 3 different egg groups! And I know that could be considered a disadvantage, but the fact is it still shows a greater level of thought and care being put into water type pokemon.

The incredible amount of bias given to the water type makes me loathe them, and it gives me Great satisfaction to kill them (which is why I always make it a point to carry around an electric and a grass pokemon). What's outright infuriating is as much as I despise them, I invariably have a water type in my group, because I simply can't afford Not to! In fact, I think you would be hard pressed to find a group Anywhere that does not include at least one water pokemon, other than the very new and very young (making it not only the most common type in game, but also the most commonly played and most common in the meta, as well).

Finally, as I first got Pokemon Red, and have gone with Fire type starters from the very beginning, Water is my natural foe, the bane of my primary pokemon's existence. The fact is, though, with their Ice moves taken into account, the Grass type starters have trouble with them as well, and really, it's not like Grass doesn't already have it rough enough, with more weaknesses than any other type (besides rock, and fewer resistances than rock), so there's that little bit of sympathy loathing going on as well.

I get that Japan is an island, and with water covering 70% of the world, there is a vast amount of sea life to draw inspiration from, making it probably very fun and easy to create all these water type pokemon, and there is variety while surfing to take into account. None of that makes me dislike water any less.

I'm definitely not a fan of poison. Most of the poison type Pokemon don't pique my interest, and in terms of a competitive standpoint, they don't offer much in coverage, resistances, etc.

While I like a lot of Steel Pokemon, and I understand it and Dark were implemented to balance Psychic, I really think they overdid the amount of resistances with them. For instance I don't think they should be immune to Poison, and I also think Water should be super effective against them for that matter.

I don't like Poison, Bug and Steel types! I hate their moves, I hate them all. lol Not to mention when Poison types poison you!! The most annoying thing!!!!!
You most say you dont like Rock Type Pokemon, well, I don't use them either. I don't hate them. I mean, their powers are cool and they are so easy to defeat haha

I dislike Poison types, their moves are too annoying and hard to deal with.

My favorites are Fire, Water, Ghost and Steel.
My least favorites are Dark and Rock.

I HATE BUGS!!!!!!

Except:

Posion, the always give me stats problems..
Bug too by the way.

luxray is my favoruite, i actually like electric type pokemons that have base attack stat greater than base special attack stat.
btw some friends said that rock type sucks, ok , i ask them ; Have you ever grow a tyranitar ? :D ok i admit that geodude or onix and some others' **** but this is different. this is king of the rock types for me.

Poison seems a little pointless to me.

I don't ice type pokemon. I like their attacks but as a pokemon type is so crippling that it is useless.

Ice type.

Ice has only one resistence, itself.

GRASS Pokemon.

Too many weaknesses and not really good dual-typed options either