As someone who has been switching back and forth: The ability to customize Firefox is nice, but:<p>Chrome has most features I need and makes up for missing ones with nicer implementations of others, or has them before Firefox does. Firefox freezes regularly for seconds, feels slower in many situations and degrades quicker if you open to many tabs (Chrome just eats ton of RAM, but can deal with many hundreds of open tabs otherwise). Oh, and faulty sites crash the entire Firefox instance instead of just a tab.<p>Firefox is about to get multiprocess feature in full releases, I hope this will fix many of these issues.