Mechew, your questions show that you do not yet 'get' Bitcoin, hence the comments asking to you search & read... there is no shortage of information & answers out there.. Here are a few quick comments..
With only 21 million coins to exist and the high likelihood people will lose them (lots have been lost already), how does this not kill the idea of btc?
This doesn't make sense to me. Why would losing a $20 bill in the parking lot, impact the USD? Why would burying 20 gold coins in my backyard, change the value of gold? As stated above, if you take a large chuck of currency out of circulation, you put some upward inflation pressure on that currency. No different than anything else in the world.
Another one is what's the goal of this to replace? USD/EUR/GOLD/etc?
Wouldn't it be nice to buy something in a country next door, without having to pay the bankers a 'foreign transaction fee' and deal with their ridiculously poor 'exchange rates'? Or to buy something for yourself, without having the bank, the government or anyone else know about it? Or to escape the local government who says you cannot transport any gold or currency out of the country? When a bankrupt government goes deep in debt, they are drowning in it, they will confiscate your gold, your savings & control where/when/how you can spend what you have left. Good luck with that.
If cash its flawed in the sense that there's only 21m. am I to believe 1 btc will be worth 1m? btc would have to reach 1m in order for the smallest fraction of a btc allowed to be worth 1 cent. With btc at 1m that makes anyone with 100k btc the richest person in the world and makes Satoshi Nakamoto and multi-trillionaire.
Not if somebody else has 101k BtC...
If you look at your question from an international non-USD point-of-view, you will see it does not make sense. Currencies raise & fall in relation to other currencies. Assets have value. Currencies are just an intermediary to transact between assets. Bitcoin is just a currency. Use it where it make sense. Use others where it makes sense. However, no one bank controls Bitcoin.. that is its beauty. It cannot be diluted due to political greed. It is a market based currency, and it will raise & fall on its own merits, desires & dangers. Awesome!
+V