This is one of the best topics today, it still holds the exact same utility!
Yes, but whilst we can argue price doesn't really matter the value of the coin is what ultimately makes the miners keep on mining and without them there is no bitcoin or blockchain and that is something to keep in mind.
Nop, that is not true, as long as there are some miners, bitcoin keeps on going. The difference is that the difficulty drops. So it's easy to find bitcoins.. so they find more blocks.
Percentage % of the network is what matters.
Less miners smaller network.. no worries.