That's not how I meant it. My point is that day-to-day life can be so consistently busy or hectic, that couples can spend way less time together than at first. And when you have kids, grad school, careers, etc., you can end up with a surprisingly long stretch of being more like business partners than soulmates.
There may not be much you can do about diverging interests, or the diminished levels of crazy love-hormones that you had at first. But taking time to really pay attention to each other, and have real emotional vulnerability and care for each other, can be pretty awesome.
IMHO marriage is about finding a teammate, not a soul mate. It is more of a business partnership than about fairy tales and romance, and I think too many folks don't understand that upfront. TLDR: You are looking for a life cofounder; choose wisely.
I learned this lesson the hard way after my wife told me she was getting a divorce. By then it's too late to fix it.
Talking to each other about practical stuff is still different than asking how you see your life.
It is also not just that the person you're with changes. You change as well, and you might not be aware of that. I mean, we all age. Society changes, too. For example, we're all running around with a PDA with a bunch of radios these days. We weren't 30 years ago.
When I met my wife, "PDA" meant "public display of affection." I prefer that to my cell phone any day, albeit not with a bunch of radios. Only a HAM operator would be into that kind of thing.
As for the radio comment: cell phones, smartphones, laptops, smartwatches, IoT in general. It all has radios these days. If not merely Bluetooth or WiFi.