Because the important thing is to get your point across. I understood your question and all the responses, so what does it matter if the spelling is unorthodox?
Yep, gets right up my nose too. An inability to spell is bad enough. Why people use cr*p like 'wot' for what; 'wuz' for was; 'boyz' for boys, is completely beyond me. I can't stand it!
Fnuny eougnh, plepoe say taht as lnog as the frsit and lsat ltteer of the wrod are in the rghit palce, you can slitl udesntanrd waht is bineg siad. Azainmg, innit - I maen isn't it?