I use Google Chrome exclusively now
I like that I can log into Chrome and it links all my other Google accounts, and if I use Chrome on any other PC, I log in and all my settings, bookmarks and apps are there just the same as if it was my own PC
Also you can install apps into the browser from the Web Store and some of them are really useful programs that work within the browser - some good sketching and drawing apps including CAD and AutoCad reader/editors. Also online games to play with others
IMO, the way it is going, Chrome is the future and we will all be doing a lot more from within a browser rather than having separate programs on the computer