It depends on how you define 'our planet' though, no? There are things you could do to this planet that would wipe out most forms of life on it and at present w

It depends on how you define 'our planet' though, no? There are things you could do to this planet that would wipe out most forms of life on it and at present we've been seeing decreasing populations of insects, animal species, etc. The planet will certainly still be here but it's a pretty big bummer if we manage to knock out half the biological diversity or more on our way out. Without biological diversity and feedback loops our planet is just soil and water.