Opinion Wanted: Tithing

Okay friends (and all of you unidentified readers). It's time to give me your opinion. Here's the topic: tithing.

I've become more and more convicted lately that tithing should not only be 10% of your income, but 10% of your Gross income. Yeah, Gross Income. I know that seems like a lot of money sometimes, but here's my reasoning. It's all God's money. Not just 10% of it, but 100% of it. Ultimately, he could decide to take it away whenever he wishes. We are just stewards or managers of his money. So, I think we should look at it as God giving us 90% of his money rather than us giving God 10% of his money. Besides, when it comes down to it, I think that we're all pretty careless in our spending. Sure, there are situations when people have trouble making ends meet and giving 10% of take home pay, let alone Gross pay, seems impossible. But I think that's when we need to fully submit to Christ and trust that He will provide for our every need.

Anyways, I'd like to hear what you all have to say. Even if it's disagreeing with me. I think it's utterly important to constantly be dialoguing about these sort of topics as we, as Christians, walk in faith. We often avoid the controversial topics because we don't want to offend others, but really, talking about them is the only way to continue to grow and learn. So tell me your thoughts. Do you thinking tithing is 10% of your take home pay? 10% of your Gross income? Or just what you "think" you can give? (I put this in quotes because honestly we can always give more than we really think we can).

I expect responses, ya'll.... :)