Can please somebody with good hearth explain me why oh why if I make a transaction, all the rest of my funds is moved onto another address BUT it doesn't show up in the Bitcoin Wallet AT ALL?
Don't use any traditional wallets myself, but my guess is that those are change addresses. They do not show up but they are in your wallet, when you'll try to spend them you will be able to.
But the changes of address add up to the fee, am I wrong? Because I'm not moving X% but 100% each time.
Additionally, it becomes a mess if I want to give one of my addresses as verification, because there won't be any money in that address once I spend a bit of it.
And I'll have to re-move money into that address (pay fee again).