BTC/USD or BITCOIN IN WALLET ?


1) My position is this: I dont think I am going to use bitcoin online or in store to buy PS5, milk and cupcakes from my local supermarket because I like my good old hard cash, for this reason I will be buying bitcoin from my brokerage account BTC/USD and keep it there for years to come without any fear that my HDD or SSD goes bust, pc gets stolen or I get a virus that will force me to reinstall windows in turn taking all the coins to Valhalla.
If you're are not mining and wont spend bitcoin for weekly purchasing then there is no need to keep bitcoin or I am wrong ?

2) I am looking to find exact date when BTC/USD was first listed on over the counter exchange and everybody was able to buy or sell BTC/USD with help of their brokerage account. The internet is just overloaded with information about bitcoin in general for this reason I cant seem to be able to find anything about listing. Can someone tell me the exact date or at least month and year when BTC/USD was first listed on stock exchanges and was globally traded by forex traders, stock traders, casual traders etc.. I guess it was first listed at some point in 2013 ?

3) Furthermore, do you think its better and safer to just buy BTC/USD stock using your broker rather than buying actual bitcoin ? The bitcoin you buy must be kept safe o a computer or in paper wallet but bitcoin bought from stock exchange using ANY brokerage is safer because you wont loose the bitcoin its like owning stock.