This could be said of communications and information technology, transportation, and other modern conveniences like supermarkets and plumbing. Where do we draw the line?
I feel it is best to draw the line where we are adopting a habit or practice
for the sole purpose of avoiding work. For example, I am 60 years old and I walk about 8 miles per day. The reason I
can walk 8 miles per day is because I
do walk 8 miles per day. When I buy groceries I typically carry 20 pounds of groceries on my back during the 3 mile trek home from the grocery store. Most people my age cannot walk for 8 miles at a time because their body is out of shape, and their body is out of shape because they are always seeking convenience to avoid work. This attitude holds true for the physical self as well as the mental self - we don't need to open our cell phone calculator to perform basic mathematics when our brain is perfectly capable of doing the work.
I understand the need for some things in life - performing a 2 month hike to talk to a friend in another state would be illogical when I can send them a text message in mere seconds. But we cannot afford to let our bodies and minds rot away because we are seeking a perfectly comfortable life that no one ever promised us - perhaps we could benefit from adjusting our expectations. Convenience breeds entitlement and arrogance, whereas hardship breeds humility and compassion.
Improvement will never be obtained without performing the work that is required to get there.