Switched to a Bowden setup. Should I retract the filament out at the end of a print?
It's okay to leave the filament in the hot end, as long as you let it cool down with the hot end cooling fan running.



From comment:


  That's not an issue, you can simply leave it in the hot end. The only "end of print" clogs usually occur when leaving the hot end hot for a while - allowing the filament to drip out - and then retract the filament without feeding it against the nozzle once more. That creates a plug that's larger than the filament diameter that might get stuck in the bowden tube