Most years, everything on my taxes is based on a form some financial institution sent me. Investments info, mortgage info, salary info, 401k/IRA info, charitab

Most years, everything on my taxes is based on a form some financial institution sent me. Investments info, mortgage info, salary info, 401k/IRA info, charitable contributions. Why is all this being sent to me and not the IRS? If it is also being sent to the IRS, why isn’t the IRS sending me a pre-filled “return” that I can simply send back with a “Agree” checked? Yes, there are years I have things that are unexpected/unusual. I’m happy to add that stuff to the above pre-filled form and submit it. But it’s absolutely infuriating that every April I have to spend a day sorting through a pile of paperwork and stress about whether or not I’ve forgotten something or gotten something wrong (or, these days, pay a CPA to do it for me, even thought there’s absolutely nothing unusual about my tax situation).