I have a DL650 and a BMW K1200GT. So, I can not comment on the DL1000 directly. I can speak about the BMW however.
BMW costs a lot of money, true. Is it worth it? Well, is anything worth what it costs? I have seen a pile of BMW's will well over 100,000 miles on them. But, on a realistic note, I love my BMW. I would never tell anyone else to get one unless their heart is set on it.
I lived in Germany many years ago and got hooked on BMW's. I like the big four cylinder engine. It is so very smooth. I can come through town in sixth gear at 35 MPH and just roll it on and go. How they get so much low end is a mystery to me. The engine is so very smooth its hard to believe. The power is so smooth, starting down low and just building up as it goes. It is NOT a UJM with a peaky engine, its more like a tractor.
The BWM is not a light sport bike. It was, however, built to run the Autobauns in Europe. The German policed used the GT for many years.
I love my Strom and I love my BMW. They are both wonderful bikes and always thrill us on our rides. I do not try to compare them as they are two different machines built for two different purposes. The BMW loves the open road. Shes fast and stable, smooth and refined. The Wee V is my back road bike that we take exploring when we are not in a hurry.
Either bike is as fast as any sane human needs to travel while sill connected to the ground. The FJR and ST are just a bit less than the BMW and may be a better buy for most. Me, I fell in love with BMWs when I was 16 and just never got over it. I take care of my own bike and find that its no more expensive overall than on a UJM.
There is no one perfect bike. If there was, everyone else would be out of business.
'17 DL 650 Vstrom, Best value ride of all time. (replaced our '05 Wee)
'07 Triumph Tiger 1050 Feel the Power! Culled from the herd...gone but never forgotten.
BMW K1200 GT, Gone but never forgotten
BMW K100 RS, Beautiful German engineering
Husky 250WR, (1986) Last of the real Huskies made in Sweden
Bultaco's ...for those of you who remember....
A long list of so many others.....
Happiness is having a motorcycle with more power than you will ever need.