Lots to like about BMWs. I too, went by the dealer to see the 1600 and have been looking hard at BMWs - but used ones mostly for the depreciation. As I've aged, the "locked-in" seating position of the sport tourers might be a problem on a long haul unless I stopped regularly. Like being able to move around a bit too.
What I've come to question is - "How much technology do I really need - and how much is it worth to me?" All I need is a reliable, decently-engineered, comfortable, well-made, powerful-enough-to-not-be-a-dog tourer that doesn't require a lot of maintenance and has a decent dealer network. Period.
I don't need fly-by-wire or any CAN BUS system, electronic windshields, an alarm system, bluetooth, a stereo, ABS, or any of it. I also don't want to drop near $30 K on a bike.
These days, I want simplicity and easy maintainablity so I'm not tied to the dealer. I look at the new BMW and admire the engineering and technology, but it appears it's at the cost of being tied to a dealer. I too have issues with HD to the point where I won't buy another new one, but OP hit the nail on the head when he mentioned building his own, as that's what I've been thinking too. Likely starting with an older RG and re-doing from the ground up. Putting $20K or so into something like that wouldn't bother me at all.
Have lurked here a while - this thread just hit a nerve. Hi to all.