Child support

Sometimes I just Dont agree with the nature of child support I believe that you have to help your kids, but I'm in a very unhappy situation with my hubby and his ex who has 6 kids with him and their making him pay 3000$ a month that's overkill and the crazy tramp won't even let him see his kids. Its affecting our marriage pretty bad, I know I'm going to get some hate by saying this but I wish he never had six kids or met his ex.