At the time for me I had been running Firefox for years but it was kinda slow and an absolute memory hog, I don’t remember specifics but I remember having to constantly close it on my 4gb ram computer. When Chrome came out it’s big thing from what I remember was it was fast and lightweight. I remember installing it and it was night and day, I could have multiple tabs open with out my computer paging memory to disk and everything felt so snappy.

With all that said I think somewhere around 2015 or 2016 I switched back to Firefox because Chrome had become a CPU and memory hog while Firefox had stepped up its game and was a lot faster and more lightweight than Chrome.