Patrick has a great post on the trade-offs we make when we take the government's money, or ask them to cushion life's blows.
Jumping off from his post, I must ask: Why would homeschoolers wish to push for government money?
I understand that we pay school taxes, but so do the elderly, the childless, the parents of private school children. Whether we think it is a good thing or not, schools are something that our fellow citizens consider worthy of supporting with tax dollars, so we pay the taxes and choose not to use the schools. That is a choice we make freely.
I also understand that we often spend money that other parents don't need to spend, and that most of us could use a little more money, but again, this spending is a result of our choice.
What many people tend to forget in their hopes for a tax credit, or rebate, or stipend is that government money always comes with strings. And yes, you could argue that you've paid taxes so you're just keeping your money. I agree. But the government doesn't look at it that way. Once it's been moved into their column on the balance sheet, they consider it theirs. There will be strings, rules, and requirements, which are some of the things that many of us hoped to avoid by homeschooling.