Is the bike that great ?
In a word: YES
Yes, cruisers and the K1600 are both motorcycles. Yes, they will both get you from here to there. The difference is in how they perform. Another difference is in the level of safety built into the motorcycle.
A tale of two Chevrolets:
Let me put it another way. My brother is a farmer. His farm truck (Chevy 1500) is easy to own. Low maintenance. As slow as he drives it handles great. His brakes never wear out because he never gets up to posted speed limits and coasts to every stop. A perfect truck for him. He enjoys the heck out of making farm trucks last for many years. To see him poke along the rural Nebraska roads would show his ear to ear grin because he is doing that which makes him happy.
Chevrolet makes the Corvette ZR1. A vehicle that costs much more to maintain than a farm truck. Both have 4 wheels and get you from here to there.
I have friends that race Corvettes in the SCCA national level competitions. They expect a vehicle to perform at the limits most people would find frightening. But, to look at the faces of the Corvette drivers, men and women, as they flash past and you will see ear to ear grins because they too are doing that which makes them happy.
It is a matter of what is important to you.
Ride slow because you are focused on enjoying the scenery, wind on your face, and camaraderie of friends. Focus on cost of ownership because you choose to be frugal. Nostalgic for antiques because it represents a time you consider "The Good 'Ol Days".
Or, as many BMW riders see the motorcycle experience:
Ride fast because it is thrilling to explore your personal limits. Desire cutting edge technology and safety, in addition to stunning performance. Willing to pay for the added maintenance to keep the high tuned machine in top performing condition.
We all make choices.