Let me first say that it's none of my business whether you buy a ticket for your child or not, so I'm not being judgemental at all.
I'm honestly interested in the rationale that the OP and others have posted when this topic has come up. The "I've given Disney so much money, I'm entitled to....." argument. You also see this in the refillable mug threads..."I spent $3000 on this vacation, Disney can spare a few free drinks for my family"
If you went into Circuit City or Best Buy and spent $5000 on a plasma TV, does that mean that it would be OK for you to pick up a DVD on your way out of the store and put it in your pocket?
Again, I'm not judging/accusing/lecturing. Don't really care about the ticket. I'm just trying to start an interesting discussion, on how the first scenario is different from the second.