Henry
Autoexreginated
I don't get the "It's useless" part, even if a DM doesn't let you mind-control the creature. He acts as if you are a friend - (A) he doesn't try to kill you, (B) he listens to what you have to say, (C) he treats you with respect, even if it is of a limited duration. Even if you have to role-play an interaction with the creature to get something out of him, how is such a skill useless. Useless would be, "the creature growls and attacks" even after the DM lets you make the roll. I myself don't find the other extreme, a player who tries to use the skill all the time as a means to grandstand the other players by mind-controlling all the opposition, as palatable, myself.
I do agree though, that it's a good idea to make sure you and the DM are on the same page where social skills are concerned, because some DM's do make them useless points, where they really shouldn't. I myself tie diplomacy for instance into sales prices, barter, etc. None of my players have tried to really bulk up on intimidate before, but as noted it's a bad idea to try and use it everywhere.
I do agree though, that it's a good idea to make sure you and the DM are on the same page where social skills are concerned, because some DM's do make them useless points, where they really shouldn't. I myself tie diplomacy for instance into sales prices, barter, etc. None of my players have tried to really bulk up on intimidate before, but as noted it's a bad idea to try and use it everywhere.