I want bitcoin do drop 90% so i can buy more !! even then it won't be dead
it depend if it drop to 90% for 1 day only, maybe it can still recover, if it is for too long it will be died yes, since basically any big farm is forced to shut down
which mean that a random dude, that before was struggling to get anything with his poor hash, can attack the network easily
Bitcoin will never die unless everyone stops mining, bitcoin regulates itself, price drops, mining difficulty drops and viceversa, only if everyone stopped mining bitcoin would be truly dead, otherwise it's not. Not even if it's worth 1$. A few years ago bitcoin was worth that amount and people were using it with no problems.