This. I entirely understand that some people don’t have that option, but it’s worth reiterating that if you have a choice, you’re best off not to have partitions at all.
I run Mint on an 8-year-old Mac desktop machine with no partitions and it’s lightning-fast for everything I need it to do.
It’s also worth mentioning that I have said desktop machine because my wife is a pro photographer and Apple and Adobe have colluded for decades to create a kind of “planned obsolescence” whereby professional photographers are ostensibly locked out of the current industry standard unless they run a very recent version of Photoshop that by design isn’t compatible with hardware architecture that’s more than about 5-years-old.
Not true at all. There’s tons of adaptive pressure. If there weren’t, we wouldn’t see the thousands of pelagic and shorebird species that we do. But even if what you say about the threat from predation were true --its not-- there would still be adaptive pressure from differential reproduction rates and access to nutrients.