"Bad" Words

Many people say that words like "darn", "heck", "shoot", and "gosh" are bad words. Well are they? Why do we use these words? To release anger in a word that way we don't scream at a person or hurt some one's feelings. Are these words habitual? Yes, as soon as you stub your toe it's, "darn it". When you cut your finger with a knife because you were careless, "shoot". Immediate reactions, they just come out, you don't have time to think about them. Okay so how is that wrong? Do you ever have curse words floating around in your mind? Especially after working a long day with people who use bad language more than they use good? Then you have to stop yourself from slipping and saying them? That is why these substitutes aren't good, they are the one word that has free pass from your mouth and once the real curse words get in your head it won't be long before they start coming out your mouth. I slipped the other day when I spilled gas on my hand while filling the lawn mower, I've decided to stop saying "shoot".