Get rid of the rest 
Joke aside, you should not if what you have meets your needs.
Apple has invested tons into supporting disabilities and making that part of the OS and making it available to developers for everyone to enjoy the products … I know a few blind people who enjoy their iPhones - it has been a life changing experience for them. Not surprised some people would go for the smooth simple experience. There is a market for that. No one forced anyone to buy an apple product