Currant and current are words beginning at cu which are spelled correctly - dependent on their meaning of course! See how many more you know in this KS3 quiz.
"I don't see any use in having a uniform and arbitrary way of spelling words. We might as well make all clothes alike and cook all dishes alike. Sameness is tiresome; variety is pleasing." - Mark Twain
Do you agree with Twain? Is there something pleasing in spelling words however you choose? Does it matter if another person has to put some effort into deciphering your writing? It probably depends upon who your reader is. If it is a teacher, an employer, or a customer, you will want to make yourself as easy to understand as possible.