Single Mothers on the Dating Scene

I  want to kno y is it so hard to date when u have children? Me personally i dont bring men around my kids, but its like when i meet a new guy and we start conversing and i mention i have 3 kids the convo goes down hill! What is he thinking? already made fam? babydaddy drama? im not taking care another mans kids? what? I'm a good woman and mother its been proven! So why is it so hard for me?