Since sorrow never comes too late,
And happiness too swiftly flies.
Thought would destroy their paradise.
No more; where ignorance is bliss,
'Tis folly to be wise.
-- Thomas Gray, 1742
While I do agree that this branch of esoteric knowledge set down by Webster in 1898 and left unmodified since (i.e., English spelling) could indeed be called evil, in the sense that it does more damage than good, I would also argue that more knowledge, not less, is the best weapon against this particular ill of mankind.
Our system of spelling is evil only because it is stupid. We don't need more stupid. If we were to apply the least bit uv thought to the matter, we could find a much better way uv transcribing our language intu print. So yes, forget how to spell, but there's no need to increase your moronity.