Fathers, would you pay a sitter $10 an hour to watch your kids while you're THERE!

I currently babysit for these kids whose mom attends class one night a week. Her husband is away about two weeks out of the month working. However, when he is home, I still go over there. Although I’m there, he feeds the kids and plays with them, and I get paid to basically just watch cartoons. The thing is, I feel kind of creeped out by the tone in his voice sometimes. Don’t get me wrong, he’s never said anything inappropriate, it’s just odd to me. I’m wondering if any other dads would even think about paying somebody just to hang around with him and the kids.