I assume you mean the mass extinctions that are used to explain the punctuations in our fossil record (i.e. the extinction of the dinosaurs from an alleged meteor strike).
I am talking about the disappearance of 95% of species, such as the P/T extinction event.
Mass extinctions do not explain how life came back more evolved.
Where did I say that they did? The mass extinctions are just that, mass extinctions. Life comes back "more evolved" because evolution continues in the species that survived the mass extinctions.
If we did not know that caterpillars transform into butterflies we would never put the two together. If we saw hundreds of caterpillars in a cabbage patch, then went away and returned a few days later and found all the caterpillars gone and a collection of webs, we would assume there was a mass extinction of caterpillars - spiders ate them all. If we returned a few days later and saw a cloud of butterflies, we would say the spiders moved on after consuming all the caterpillars and the butterflies were free to move in.
Actually, all we would need to do is compare the DNA of the caterpillar and butterfly. We would find that the two populations are one in the same. We would then study the caterpillar in the lab and witness the transformation of the caterpillar into a butterfly.
What we see in our fossil record is better explained as transformation . . .
How so? Are you saying that modern species have identical genomes as species from the Cambrian just as caterpillars and butterflies have identical DNA?
What we are looking at in our fossil record is strikingly similar to this procedure.
No, it isn't. With development the changes occur over a lifetime. In the fossil record, changes occur over millions of years over thousands and thousands of generations. They are very different.
Many dinosaurs could not exist on the Earth now, they were too big and would be crushed by gravity.
Say what? Do you really think that the Earth's mass has changed that much over the last 65 million years? What are you smoking?
It is premature to believe that "the universe ticks away without really caring if we exist or not". This is the consequence of accepting an explanation that, at its core, says life is all for nothing.
Does the presence of life on a planet somehow cause a force field to develop around a planet that prevents meteors from crashing into it? Is there some force field that protects planets with life from massive gamma ray bursts? Please explain to us how nature stops disasters from happening on planets that have life.