Loss of ADA is very unfortunate, i feel for your loss, i think, like other members have posted security is the most important topic for our funds.
There needs to be more work on wallets and security. I use the daedalus pc wallet which i am sad to say is incrediably slow, a 28.8k modem seems faster, sorry devs.
I do want cardano / Ada to become mainstream 3rd gen crypto to take us to the moon and back, but these types of issues keep us at the level we are, 12th in the market place and slipping fast…
Please work on getting security / speed to the top of the priorty list, the rest will fall in place.