I always get the fear when doing major upgrades on any platform. Something is bound to be non-compatible and get messed up. In this instance upgrading to WordPress 4.0 took about 5 minutes, didn’t mess up the themes and everything is still where it should be… right?
WordPress is, in my opinion, the best platform for blogging and amateur website creation. There’s over 30,000 plugins, more themes than you’ll ever need and the comment spam thing seems to be becoming less of a problem.
All in all if you can’t code (perhaps even if you can) and want a quick and easy website you can update yourself wordpress is the way forwards.