||While I agree with your sentiments, I'm having some difficulty with your reasoning.
Why the hell would god care about Fluffy? A so-called eternal being, thats life spans infinity could not possibly care about a cat.
Actually, a so-called eternal being such as you describe might care about a cat. Said being might care about elephants, red giant stars and paramecium. On the other hand, this hypothetical individual might not. Once you concede the possibility that the so-called eternal being exists, you have to concede that this person is capable of a lot of things we might not understand, including caring about somebody's mangy cat. I understand what you're saying, but you're making value judgments that are just as bad as the one you're attempting to refute.
Why do people think God (use your imagination here) cares about your stupid, smelly pet? Because the Bible (unquestionable evidence of Divine Power, according to those who believe) says that God provides for the little sparrows, suggesting that He cares about all sorts of little details. It's the big stuff like genocide and Britney Spears He doesn't get involved with. We're on our own with those problems.
Prove it to me that there is [an afterlife].
Therein lies the rub. You can't prove something that requires faith to believe in. If you could quantifiably prove something like an afterlife, it wouldn't require faith anymore. People would start sticking to formula (like exercising more and eating better) and religion would lose a lot of its bite. Theists object to a lot of quantifiable data because it distract them from their faith. Why bother praying to a Higher Power to make sure the sun will rise every morning if you already know that the laws of physics demand that it will whether or not you pray?
Do you think I'm being silly? They used to pray for the return of spring every year, and believed that long winters were a sign that the gods were angry. Now that belief isn't quite so pervasive, largely due to the discoveries of empirical science.
Theists hate it when you demand they prove something. Their very beliefs are based on emotional faith rather than critical thinking. Tradition sticks with what works, not with what works better.
A troll's true colors.