So, the question is how safe this system is? Won't I lose my bitcoins one day?
Electrum is one of the oldest btc wallet it is attributes rich but it is not user friendly. If you are just a beginner and newbie like me I suggest you to avoid electrum, but if youre familiar with the basic terms then this is the excellent selection for you to use. The characteristics of Electrum is on being fast, safe and private. The wallet is a lite wallet, meaning it does not download the blockchain, so there are no delays on system and its always up-to-date.