I need to qualify my answers to the poll. Normally, I do not use an indoor cover, nor do I think they are necessary in my case.
However, if I clean the bike up really well, polish, etc...I will use my CVO cover IF it's going to be more than a couple of weeks before I ride again. Did that right before our last trip, when we met you, Gary. Detailed the bike almost 3 weeks prior to the trip, so I covered her up then. Rode the Vrod when we wanted to ride. Before I left on the trip, cleaned up the V, then covered her while we were gone. First time either CVO cover was used.
If I lived or parked my bike in a dusty/dirty environment, would cover, but only after getting the dirt off. Mine stay in the basement, so get nothing on them other than a fine fuzzy type dust, probably because the Washer/Dryer is close by. Nothing that a California Duster won't get off in about 30 seconds.