Your last iPhone?
Will there be a time when you will keep your current iPhone and not upgrade due to your current hardware limitations. i.e. desktop or laptop?
Though I have the 1st gen. MacBook Pro 15" TouchBar, I sync all my content on the late 2013 MacPro. As newer iPhones comes to light the OS software version keeps getting higher and higher to the point where your iPhone will not be compatible or sync.
And it cost to much to keep buying new Macs just to keep up with your new iPhone.
What would do?
Read responses in forums.macrumors.com