Flying vs driving ?
FFS....In terms of learning/development/skill building they're very similar (see earlier posting about the four phases of competence). In terms of complexity and risk, they're Worlds apart. So, one is easier to learn and to retain the necessary skills. The other has extra dimensions to complicate matters when things go wrong. Both can be a greal deal of fun when done well. Both can kill you (and others) if done badly.