What defence do you fear the most when you face it and why is that?

caro kann...uhg....

and the rat defense/pirc

The French, especially the advance variation. Makes me not want to play it anymore. 

against the advance you can try c5 and if dxc5 recapture with the bishop and then sometime u can play f6 to ''get some air'' also after castling i suggest the bishop route:Bc8-Bd7-Be8-Bh5 which can happen only if f7 is open...

French Defense when i was playing 1.e4...Nimzo-Indian now that i'm playing 1.d4.

I love mixing the Rat and the Philidor Lion together. It can be a bit cramped, but it can really get certain players totally out of their element. You can also use the Fishing pole trap from this defense too. I have won a few games that way. If the trap fails, you still have good changes to for a win.

I hate playing against the Dutch.

yes BattleManager you're right,thanks for correcting me i will edit it and correct it...

the staunton gambit might be an idea

The indian defenses are giving me a horrible time

nameno can you demonstrate what you're saying on a board ?i would appreciate it if you could

The French.

While studying the different Indian opening and defenses, I think one of the main problems can be that you have to put your knights on the edge of the board at times, on just the right square. You might have more than one edge square to chose from too. Between picking the right one and choosing whether or not to violate the principle of a Knight on the rim being grim, it can certainly be confusing. I have also noticed that a few positional tendencies I have with pawns in other systems, are wrong in the Indian. As a positional player, if I can't do what I am used to with pawns, I am a mess.

why is that so many fear the french?i play it regularly as black with good results but i dont get it why people are afraid of it...

For people who fear the french or caro-kann, you should try to study them. There are many lines you can play. I personally do not play e4, but here are some lines you can play.

I am a caro-kann player and I don't know too much about the french but you might want to give these lines a try.

i think in most defences including caro and french the exchange variations make black's life easier...becauseaf the symmetry...

The problem is that to really challenge the french after 3.Nc3 white has to know quite a bit of theory, i guess, specially in the Winawer. I think that the Korchnoi Gambit of the Tarrasch is a great choice for attacking players who don't want to learn a lot of theory and still have good attacking possibilities. Also, it's maybe the soundest gambit ever(well, of course the benko deserves praise and the queen's gambit i wouldn't call it gambit). 

These 3 moves often transpose to variations of the gambit.

greenleaf14, I know from experience that the panov botvinnik attack: e4 c6 d4 d5 xd5 xd5 c4, is not the easiest opening to handle. Personally, I don't really like to be faced with the panov. If you really think the panov isn't that good, I'll gladly accept a challenge. I am not an e4 player, but I know that the panov can not be bad.