I have my children 50% of the time. My ex-wife and I alternate the schedule slightly so that one of keeps our girls on Sunday one week and the other the next week. The rest stays the same. It comes out as being 50% regardless of whether we strictly adhere to it to the second (which we don't).
My child support money really doesn't go to my girls. I work full-time in excess of 50 hours routinely. My ex-wife works around 20-22 hours a week at a pizza place. She refuses to seek another job or a different job. She wants the government and her deadbeat boyfriend to take care of her. She spends her down time smoking pot (she was doing it for years even before it was legal in my state). I pay her child support despite being saddled with $30,000 in debt that she couldn't assume ANY of when we divorced because she would never pay it and it would just cripple my credit.
So I understand the feeling of being "ripped off" which has less to do with having to support your child but more the feeling of having to give your ex money that can be spent any way she sees fit. She can blow it all on herself and there is zero I can say about it. In fact, when my kids need clothes, shoes, books, lunch money, school fees, etc. paid for, it comes from me. I write a check or give them money. Whenever they need anything, I pay for it. AND I pay my child support, even though I have my girls every bit as often as my ex-wife does. It's frustrating because I don't feel like my ex-wife does her part for the girls financially and I'm sure that's the "ripped off" feeling the TC is referring to.
Even with the above, I'm one of the luckiest guys on the planet. I'm free from that relationship. I get to see my girls and spend my time with them however I see fit (took them to Disneyland last September because I worked my butt off to get out from the towering debt). I'm free. I get to be free with them half of every week. And it is easily worth any monetary amount I must pay to my ex.