For me i think you shoud use a paper wallet or make your possess vainness adress so you can have your own personal crucial. Even now the best factor to retailer your bitcoins is in a paper wallet.or just store your personal key on some usb but nevertheless you should have a backup incase your usb gets corrupted. Or just set it in your neighborhood bitcoin wallet that you can have faith in.
yes i will also prefer that we need to use wallets and some wallets are there which will help anybody to keep their bitcoin safe for a long time so don't feels rude that what will happened and how will i keep my bit coins.