To be historically correct, during the time that Jesus lived, there was no letter "J" at that time. Y was the letter that was used in it's place, so Yeshua is correct. Same with all other biblical names that start with J.
I have no problem with the name Jesus. I use it often. But to deny the history of the letter J is just turning a blind eye to the truth. I would think that to really know Jesus would include knowing his original name.
I do accept Jesus as my lord and savior. I also know his original name.
True, never said you couldn't. Just saying that there is more to know that might even increase your love and appreciation of Jesus even more.