While were on this topic, is a MAC any safer than a PC?
I guess it is statistically a bit safer but I consider to be the same, personally, since Mac and Win are the democratized Operating Systems worldwide.
I would suggest you to use Electrum as a wallet , because It gives you a 12 words seed when you setup the wallet for the first time , and you can recover your Bitcoins & wallet with those words in a case of a computer failure or device get burnt as you said etc ... So just keep those words in a vault in a piece of paper or whatever . and you should be fine
I like this one a lot, in case I lose my offline device I can get to my wallet again via these words seed. What are they (Electrum) doing with the wallet, then? Isn't this some sort of remote backup that can't get compromised aswell? Someone could get into Electrum's DB and... voila?
They don't store anything in their Database as far as I know, you can see here more informations about the seed :