So I am trying to comprehend this Bitcoins system so please bare with me if I get it wrong.
If I care at all about my bitcoin wallet I should back it up, otherwise, if I have coins in my wallet and then lose my wallet.dat then my coins are gone forever.
I also heard somewhere that after a while coins will no longer be able to be mined. If this is the case, and tons of people lose their wallet.dat (for whatever reason. eg. Virus, format, new PC, etc), would that cause coins to get more and more hard to find, which in turn would make coins be worth more, but would "mining start again"?
Sorry if this sounds stupid I'm still new at this.