It used to be common practice to remove tapers from production machines before holiday or other extended periods of non-use. It's not necessary with modern short tapers, but IMO it's still good to do. Long tapers are self seating often not requiring any other retention method, but on top of that the stress in the fit can relax over time in such a way that further locks it in. Not a huge risk on all tapers, as the longer shallower tapers are most susceptible.
When I was younger and being taught how to run our VMC's in the shop, the old timer showing me the ropes said to always take your tool out of the spindle and leave it on the table at the end of the day. Nobody does it anymore, but the practice made sense as a way to mitigate tapers potentially locking, or the off chance the pull stud pops off at 2:30 Sunday morning. I don't leave tools in spindles unless I "need" to, like taking all day to dial something in so you can run it tomorrow, otherwise taking the tool out is just like any other house-keeping task at the end of the day.
If stuck tools happen often, I'd turn a brass rod down as close tot he ID of you spindle as possible and use that to wail on. That way you don't risk damaging threads. Otherwise just loosening the drawbar but leaving it threaded into the collet while you wack it is fine.
