Or you could ask, why would I keep one old obsolete system that is not supported when I could have 2 new machines with better hardware that are supported?
Both arguments are
valid...situations are always on the personal (or needed level or $) preferences now-a-days.
There is always those who will agree and those who will disagree with Apple's decisions (I like Apple's projected direction). What I see happening is the trend back to having both (Microsoft & Apple) users and they will be generally
separated again (the War begins again), and that creates movement for the industry (which is good and needed).
Microsoft has (I can say) "finally" a
decent (stressing the word unfortunately) OS that
generally works now (and looks ok too). It took 30 years... but it is now decent enough (not preference) but is fact. Because of this, it creates opportunity for developers to create great(er) apps that make the user (and now maybe businesses) to
decide which platform they want (or just have both). It also makes Apple and developers
"step up their game" as far as Apple apps too. "Gaming" with virtual reality "stuff"
might make the shift from a dominate Microsoft industry toward Apple hardware..but we will see. Apple has started looking
seriously at gaming now..so only time will tell.
Regarding Mac Pro users...in fields like video production, it is great to have both platforms on you Mac Pro due to industry standards, so understandable the current (and future complaints) about intel being removed is valid completely. A "Hybrid" type of Mac Pro would be ideal for such a case (but doubt that will come). Mac Pro 6,1 and (2019) filled the gap for
awhile, but remember...it was Microsoft that said, "
No support" in so many words and actions..not Apple.
But...the future is opened again and not set (at least for awhile). so it will be interesting to see "what plays out" going forward.