I've finally switched (back) to firefox today.
I switched from firefox to chrome for their superior devtools a few years back, but hopefully firefox has had time to catch up.
Everything old is new again!
 replies(4): 
I switched from firefox to chrome for their superior devtools a few years back, but hopefully firefox has had time to catch up.
Everything old is new again!
    #!/bin/sh
    [ -z $CHROME ] && CHROME=chromium
    TMPDIR=$(mktemp -d /dev/shm/chrome-XXXXX)
    $CHROME --user-data-dir=$TMPDIR --no-first-run --no-default-browser-check "$@"
    rm -rf $TMPDIR
The first line lets me override which Chrome version I launch if I want to try instead google-chrome-stable or google-chrome-beta for example. I keep them all installed from the AUR on Arch.`export HOME=$TMPDIR chrome <args...>`
Will make chrome think that $TMPDIR is $HOME. Keep in mind that means your downloads for example would also be deleted after the rm -rf
This works for most other software too