A Useful Invention

I just have to say - after using so many instances of the word useful - that it is one of the stupidest spellings ever of a word! Useful instead of usefulL! Really? is it not FULL of USE? Lets admit that it may really be just a way to discourage good spelling, promote class warfare and bring down the english speaking world! Or are we spelling world with two R's now? Occupy Useful (L)!