RE: how can a crossbow be easier ?
You should buy or shoot a crossbow before you say things like a compound is easier. Pick a crossbow up & shoot it & it shoots groups right off the bat. Adjust your sights & your done. Neither is true of a bow, usually anyway. Crossbows dont need tuning, no nock height adjustments, no rest adjustments nuthin, just sight it in.
You also left out a couple steps from Arthurs post, such as attaching your release & drawing the bow. Other than they both shoot arrows they are not the same. No draw length issues, the list is longer than you seem to realise. Much less clearence problems shooting from a tree or a blind.