I nearly dropped the hammer on one of the BMW boxer twins for many of the reasons you mention. I'm an adult driver and don't really need a crotch rocket just something comfortable, reliable (I looked at a few bikes with +100K miles

), and with a reasonable cool factor. I also like the simplicity and sound of the big twin.
Ultimatly the only reason I didn't buy one was because I decided against getting a motorcycle all together. Truth be told I bought the Porsche to keep me off bikes.