Well first off.
There is no other evidence that there is plant or animal life on any other planet. So we haven't found any plant or animal life or something recognizable to that extent on other planets. We are looking for microbial life on Mars as we speak and depending on what news you read, some said we found microbial life in a rock on Mars, some say we didn't. We know that we found evidence that there MAY have been microbial life on Mars 30 years ago. So we're 30 years too late to actually find it, just trace remains. Search for :Viking mission microbial life
ok.
Secondly.
Our solar system is quite special. Most solar systems that we see, so most other "suns" suck. Ours is really, really cool. Within this cool solar system there are a few planets and ours just happens to be within something called the "goldilocks zone" which is a zone that is close enough to the sun to be heated at above freezing temperatures at times and far away that we aren't a molting planet like Venus is, which is basically scolding hot. This "goldilocks" zone is quite a large zone. I mean it's not a small area. It's quite a big one. And the planet, our planet, moves in an eliptical ( oval ) fashion around the sun and that's how we get seasons. depending on where you are on the planet, 2 seasons or 4 seasons, but we get seasons. But because we move in an oval way, sometimes we are closer to the sun, sometimes we are farther... but we're still in the goldilocks zone. So it's a big, big area in space.
And third.
So we haven't found evidence of macroorganism life on this planet farther away than the dinosaurs. Some people once speculated that there may have been another "era" of life on the planet before the dinos, but there is no evidence of that. So we are part of the rebirth of life, a sort of, 2nd generation of life on the planet though we have SOME animals that exist from that dino era... like crocodiles and cockroaches and other insects. There is no point in speculating how humanity if humanity would have survived when "godzillas" roamed the earth. I mean, look at us. we're a pretty resistant species and quite adaptable. More so than the dinos. So I'm pretty sure we would have survived and thrived and conquered the planet as we do now. We are the best form of life on the planet. We're #1. There is nothing, no other animal or plant or whatever on this planet that is as cool as we are. And so, we need to not be stupid about how we behave so we don't cause our own extinction.
The dinos couldn't prevent their own deaths. We can do things to prevent it. Like not causing climate change and have the climate of the world change into something we'd not enjoy. Or like not nuking ourselves to oblivion. Or like building a proper asteroid defense program so that we don't let big asteroids like Apophis come and end us. Which we can do because we are humans and we're the best thing ever.
You live in fantasyland, man.
