Yes, taking off is easy. Taking off well, with mastery over a predictable outcome, takes a little more effort. Getting off the ground is only the first part of taking off. Once we’re in the air, we need to be able to climb. Most of us, however, do have the data we need to develop an expectation of take-off performance.
It’s our job to ensure the software results match the POH data. Only then can we replace hand calculations with handy computer shortcuts.