One problem with Chrome on Snow Leopard is I have only 4 Gb Ram, and with more than 20 or so open tabs everything gets real sluggish, and after a crash or just a re-start tabs go missing & I have to go looking for them.
[Walter Miale]"In El Capitan, is there any reason to use anything other than Chrome?"
I use Safari so for me the question is, why would I need a browser other than Safari?
Why do I use Safari you might ask...? (other than it's there and it works) Because it has support for the Mac keychain and is available on my Mac Pro, MacBook Pro, iPad, and iPhone. That means that I store passwords once, and they are available on all of my devices without having to install anything else. One seamless experience. I can also be reading something on my Mac and get called into a meeting and I can go to my iPhone and see the tabs that were open on my Mac and continue to read the web page on my Mac from my iPhone. Did I mention it was one seamless experience?
So not everyone uses Chrome as their default browser but everyone is free to use whatever makes sense for them. ;-)