Git is simply easier to use, and harder to shoot yourself in the foot with - at least when it comes to the basic flows. (Granted, you can blow your face off with git if you really try hard).
When branching in git is a simple git checkout -b newbranch away as opposed to svn copy http://repo.com/some/path/to/trunk http://repo.com/some/path/to/branches/somenewbranch - then what else is there to say, really?
Sure, svn is extremely easy to setup and use in small teams. But it is simply not geared towards modern development flows.
I appreciate tools that appreciate my time (and sanity) as a developer. And git does just that.