That is a thing in the English language, in eg Sweden we do the sensible thing and call the 1900s "nittonhundratalet". The English way is stupid, it is like saying that the current year 2020 should be called "The 2021th year" just to confuse people. I mean it is technically correct, but it is a dumb way to speak.
Perhaps so, but over 400 million people speak English as a native language whereas I'd guess those who spoke Swedish at most would be only 10% of that number.
That said, as a native English speaker, I'm not defending the goddam language it's such a mess you'd reckon it'd been through a blender. About the only thing going for English (other than its ubiquity) is that there is essentially one indefinite article to remember (unlike all the different and nefarious genders of many other languages).
On the matter of counting, irrespective of what you say, unlike the ancient Romans, we have all inherited a number system that includes zero—and that zero is added on the tenth digit (not the eleventh). If you wish to count or do mathematics in a different system other than in our common base-10 one then you have every right to do so. However, I, like most other people, have taken the easy way out and adopted the counting system that puts this "0" thing on the 'last' [already-repeating] number before the counting system repeats. (Right, I agree with you, it is strange but I can't think of an alternative other than to kick out the "0" and go back to the Ancient Roman way of doing things. Reckon though it'd be pretty clumsy. I reckon I'd truly struggle to do say vector calculus or square root by the long method in Roman numerals. I just shudder at the thought.
But as they say it's horses for courses, I signed off my recent Christmas cards in Roman numerals as I always do, last year just past being MMXIX.
You may have invented a better system but I'm damn sure it'll take a lot of convincing others to change the world's most common numbering system (despite its quirky faults—that, of course, is if you actually view them as faults). :-)
