I completely agree the Python is superior in most areas to the Clipper. But, I have more fun flying the Clipper. I cannot point a finger at the reason, it just feels more fluid and, well, fun.
The only advantage the Clipper offers is speed, but that's a big advantage. It means you dictate the fight and you decide when to disengange. I don't do much PvP and am by no means an expert, but the only time I almost lost my Clipper was against a Fer-De-Lance, which is also a very fast ship. Everything else, just boost and wave good-bye. Same in PvE.
At the end it boils down to personal preference and matter of taste. I kept my Clipper for the big smile it creates on my face when flying it. The only other ship I love as much is the Fer-De-Lance. I tried to find love for the Python but it didn't happen. My wife sold her Clipper and got the Python, she never was happier. Tastes differ, but that's the beauty of the hangar, to be able to switch ships.
tl;dr: Fly the ship you enjoy most. Eventually you will have all of them anyways.
