Again,
You are stating your own opinion here.
Apple does not force you to upgrade/update anything.
No company "pushes" you to do ANYTHING!
The choice is always yours.
If a particular user feels the need to always have the latest and greatest of any technology, then they will never be satisfied with any device they own.
While I have a new, large iPad Pro (I have been waiting for larger instead of smaller iPads since the original iPad came out in 2010), I still use 4 and 5 year old iPad 2 and 3 models.
My iMac is from 2009 that I purchased used in 2011 running two OSes that are 3-4 generations older, but run much better for my hardware and software.
I choose to keep running my older devices and computers because they still do the things I need them to do.
I will end up repairing my iMac (as long as its not the screen or logic board) if something happens to it OR WILL BE FORCED into purchasing another used or new Mac if my current one just completely dies.
I am not being forced or pushed to upgrade or update my current Mac hardware to something new/newer and faster just because that is the current state of technology.
I have a 6 year old flat screen, 55 inch plasma TV that I will not replace until it dies.
I am in no hurry to spend money on the latest and greatest TV/video technology.
No one is forcing me to go out and purchase the latest and greatest of ANYTHING, either.
Older technology is not, by design, developed and designed to get slower and obsolete.
At the time it was developed, it was state of the art and the OS and other software were paired to match the current state of computer technology.
Over time, software that gets developed for much newer hardware starts to tax and exceed older hardware.
It's not developed like this by design, it is just a result of technology always moving forward.
You can choose to try and constantly keep up with it or stick it out with older hardware that, while maybe slower or simply not doing things as fast as it used to function on the original software it shipped with, still can do the things that you needed the devices and computers to do when you, originally, purchased it.
Electronics/computers are just like the automobile industry and cars.
In order to stay in business, they need to come out with new models every year.
You can choose to trade in a year old car every year for a new model or you have choices, too!
Keep a car for only a couple years and trade for the latest and greatest model or keep your new car for 6-10 years before trading in or just purchase a new model car outright in that 10 year time.
No one is forcing you to purchase a new car every year or every few years.
THAT choice, also, comes down to the individual.
This is all sort of moot point now as both the upcoming iOS 10 AND macOS Sierra will obsolete all iPad 2, 3 and first gen. iPad Mini models as well as some iPhone models and all but the new iPod Touch 6th gen models.
macOS Sierra will obsolete all iMac 2007,2008 and early 2009 models, as well.
So, to get iOS 10, iPad 2, 3 and Mini users have a choice to either stay with an iPad with whatever last version of iOS 9 presents itself OR will have to purchase a new or newer model iPad.
Same with Mac users with OS X Sierra.
iOS and OS X are undergoing some real modofications under the hood that older model hardware will simply not be able to handle, now.