I'm new to Python. (I've only written a few thousand lines of Python so far, so I'm still learning.) I know a lot of OLD programming languages already, all of which have (or lack) features (warts) that annoy me.
I'm tired of programming languages that annoy me. Python 3 is the version of Python that was specifically intended to have fewer warts, and be less annoying.
It's still not perfect. For instance, it has complex operator precedence (which, I suspect, simply means that the BDFL never learned APL). But it is pretty good.