Does anyone know of an amputee who has asked God to make his/her limb grow back?
Not specifically, no, but I don't doubt that it's happened. People pray for absurd results all the time.
I am having so much trouble responding to the posts because I can't seem to get the hang of copying a portion of a post and responding. 
It does take a little practice. There's a test area you can use if you feel the need.
Are most atheists as rude as so many of the posters on this forum?
There are atheists of a number of different stripes. For my own part, I try to use a more sympathetic voice because I have found (after some "experimentation", as it were) that that approach suits me better. Others prefer to be more, ah, "direct".
In any event, I would ask that you try to keep things in perspective. Atheists may sometimes belittle and ridicule you for your beliefs, and you no doubt find that annoying. However, Christians are forever stalking us, vandalizing our property, and making death threats against us. In my view, we have the short end of the stick; do you disagree?
Or is it the forum's anonymity that makes it easy to belittle others?
Not sure how long you've been using the Internet, but I'll let you in on a little secret: that's not specific to any Internet forum. I once had someone call me a "fucking moron" because I had never heard of Socotra Island. It's par for the course. If you intend to continue participating in discussion forums, you would do well to develop a thicker skin.
Maybe it is just because we cannot communicate our tone of voice very effectively through computer text? Or maybe it is people who are weak in their personal lives but OH MY they can be outspoken on the internet? Or possibly ALL forums are full of vocal people wanting to make themselves heard, and I have just not been on forums much?
Any or all of these are also possibilities.
Not all Christians are like the few vocal (can I say extremists) that are on the news.
Of course they're not. Nor do all atheists -- or even most, really -- fit the stereotype that so many people have of us, either.
In fact, most Christians I know would not bemoan a life of Christian living if, when they died, they found out there was no God and they were slipping into a big black hole of nothingness. Living a Christian life is fulfilling and a joy--no regrets. Of course if non-believers end up at the portal of death and find out there IS a GOD, well, I would expect there might be a few regrets (no scientific proof of regrets, just my theory).
We get this one about once or twice a week. It's called Pascal's Wager. Please either google it and learn about its flaws for yourself, or wait a few hours while some of the regulars here explain it to you. I'd do it myself, but I'm relaxing with a "Law and Order" DVD from Netflix this evening and can't be bothered. (I really do need to type up something to copy and paste for that, though.)
I have to agree with the concept that "proof" in science changes. New evidence? That did not change the truth. The world was always round even when people thought it was flat. Nothing changed except that Christopher didn't fall off when he went sailing. Then man reconsidered and decided the new truth was that the world was round.
Actually, man knew for quite some time before that that the earth was round, but regardless, yes, that's more or less how science works. Not seeing your point here, though?
God is not a myth because he didn't answer your prayers or because He doesn't act like you think He should.
Actually, it's more that he doesn't answer prayers that way Jesus said he would in scripture, which is a different matter. Try comparing these two statements:
1) "I promise that I will immediately give one million dollars to any Victoria's Secret model who kisses me, anytime, regardless of the circumstances."
2) "If a Victoria's Secret model ever kisses me, I might give her a million dollars right away, or I might give it to her in five years, or I might not give it to her at all. It's my own choice, and after having been kissed by one, I will keep my choice secret and never tell anyone what it is."
You are apparently trying to claim that Yahweh is more like door number two. Unfortunately, scripture says that he's behind door number one.
"If God is real, why do people suffer? If He loves people, why are children molested and people murdered and children die?" If we as finite people with limited knowledge cannot understand how other finite people with limited knowledge behave, how could we even assume we understand how God works?
This is the logical fallacy known as "argument from ignorance".
My daughter wants to go to Wal-Mart, so I have to go since she can't drive. I'll get back to you.
I hope your shopping goes well.
I am getting such an education about atheists here but I have to question if this is really typical of the majority.
The people you are engaging here aren't just atheists. They're atheists who are concerned enough about the issue to be taking the time and trouble to talk about their views. That being the case, you are quite naturally going to find people who are passionate. People who are not passionate would not be participating.