What am I headed for?
— N. Hamilton
A: I understand your frustration. It’s not just Microsoft. At some point, program developers discontinue support for older programs. When that program is an operating system like Windows that means security patches will no longer be developed and made available. That means if you keep using the old operating system you will be more vulnerable to hackers and malware than if you upgrade to a currently supported operating system.
Microsoft did offer free upgrades to Windows 10. That program officially ended in 2016, but you can still achieve the workaround by following directions you’ll find here. Still have questions? Visit Upgrade to Windows 10: FAQ
And you can find details about the life cycles of each version of Windows here.