I truly believe incarnation is unnecessary.

[Horuseus]

When we incarnate, we do it with the intent to change something or change ourselves.

Quite the opposite actually. We partake in the incarnation process to regress back and realise our true selves. 'Lessons' and 'Catalyst' is merely a crutch we use to remove those distortions and beliefs which prevent us from doing so, allowing one to align more effectively with their core whilst in-carnate (In-the-flesh). 'You are that which you seek' afterall. As is stated in the Ra Material, the Higher Self, or Oversoul, is a mid sixth density entity which is the end sum result of development, so what exactly are you learning if you've already 'learnt' all there is? "All learning is remembering" - (The common attribution is to Plato).

The core aim of evolution is essentially to return to Source contributing the net sum experience accumulated across the way for the benefit of the whole so that it may use what has been learnt to invest in new experience in an ever increasing awareness/expansion of it's Infinite 'Self'.

Late edit: Was told to emphasize the 'understanding' of the Self, rather than learning, both on the Micro (individualised Spirit) and Macro (Source/Origin/Infinite Creator) levels.