Ack - Mom Rant 101
You do not suck. You would suck if you beat your kids. Using your hands to discipline does not make you suck. Picking your kids up to make them move, not sucky. You're their mom, it's your job to make sure they grow up to be good people. Good people treat other people with respect, and I know that you would only use force against your kids when they weren't being respectful towards you.
I know you respect them, as individual people. I KNOW this about you.
You don't suck.