Because it's most likely bullshit if you're leading people on in order to fulfill your desires and goals. If you're going to flirt with people and make them feel special but then just tell them you do this to everyone, depending whether and when you even tell them. Just keep yourself to other sluts then if that's your goal don't go out ruining good hearted and souled people, not saying you're a monster either but I'm sure there's more to it and your post sounds a bit ignorant to the cause anyways. Someday you'll be alone and miserable looking back at your decisions. Possibly not too, but its quite common.