nothing and nobody can destroy bitcoin. he is the clock father of all cryptos
Actually bitcoin network is has no data center so it is hard to attact bitcoin network. No one can destroy bitcoin except God, many people said that bitcoin will die if there is no internet connection, but who want to make the internet dissapear, I think most of people doens't want to do that.
Probably because bitcoin is a decentralized system then it is hard to make it down in terms of online security, but unfortunately even what secure it is then there are still possible points that can make it down, like those other coin who are next in line of it that can overtake the value and make it obsolete and then the threat from government that if they want to legally ban bitcoin, i think they can really do that.