Spelling ‘The’ like ‘Tha’

I don’t know why tha is spelled with an e. I like spelling it with an a better. It would only make more sense to spell tha with an a. That is tha way tha word sounds! I mean really, it is spelled with an e, and do people say the like theeeee? No! They say it like tha. Also, tha looks better than the as well. Sure, I’m not going to spell because like beecuzz because it sounds like so but I still want to spell tha like so. Sure I’m not going to use it in formal writing either but I still want to spell it like so for fun stuff and such.