Random thoughts in answer to your question. For men or women, DLR makes more connection to people with imagination. People who have dreamed of adventure in far away places, or fantasized about knights, princes and princesses. People who are extremely practical and "here and now" do not connect as well, IMO.
Also, it helps if you visited the parks are children. I remember going to DL when I was three-years-old with my grandfather and ten-year-old uncle, and can still remember riding Dumbo with my uncle and looking down at my grandfather from high above Fantasyland in a flying Dumbo.
Today when I go to DLR with my children, it re-connects me with my childhood.
I think DLR also appeals to people who appreciate creative uses of technology. When I stepped off of Soarin Over California for the first time, I was overwhelmed with the experience and, as an engineer myself, awed by the way technology was used to transport you somewhere.
People who have close family and personal ties will also be more likely to appreciate DLR. When I go with my four boys and DW, we have a blast just being together in a fun environment.
I do not really like crowds either. And I hate, hate, hate to wait in lines. However, for some reason I make exceptions for certain things. For example, while I hate shopping and waiting in lines to buy things, I love to Christmas shop and do not mind waiting in lines to buy Christmas presents. Somehow the Christmas shopping crowds add to the experience rather than detract from it. DLR is similar for me. It would be downright strange to go to DLR with no crowds at all. The crowds give it an energy.
With that said, I do not seek out crowds. I avoid weekends at DLR, for example. And we use strategies to minimize waiting in lines (for example, see "HydroGuy's How To Avoid Long Lines Rules"
www.disboards.com/showthread.php?t=1199856).
Maybe if you could plan your trip to avoid most of the lines your DH would like it better. Maybe using something like RideMax (
www.ridemax.com) would help.