Windows XP Support Ending, now what?

David Sancho, Senior Threat Researcher at
Trend Micro (on photo),

wrote an article
about the end of Microsoft XP. Obsolete and
unpatched, he describe three kind of person
still using this 13-year-old operating system.
XP still in 28% of all PCs worldwide
Windows end of support this, Windows end of
support that… a lot of people in the IT field are
writing about how Windows XP support have been dropped since 2 days ago. Why is this a big deal?
Like any other software, operating systems