I definitely see your point. LD's are not willing to put effort into the marriage. But in my case and in many others, the LD spouse is too dang busy with other so-called important things to be concerned with such things as intimacy.
I'm pretty lazy when I have time off. I want to enjoy life. What could be more relaxing than some quality nookie with the one you love? Ah, no! There is shopping to be done, repairs to be made. Dangit, there's always something getting in between just her and me.
I think the LD's should take a break from the fast lane. LD's don't see the importance of a romantic dinner or a weekend away, or a walk in the park. Love needs quiet time to grow. Maybe LD's avoid quiet time because when you are constantly busy and preoccupied, difficult questions about yourself are easy to ignore.