Re: Anybody switch from double to single?
To answer the original question, I stopped using the thing in the first place because the music I'm playing now (funk and old-school rock) simply doesn't call for it. The only time I used it was when I played some metal covers back in the day but even then it wasn't the crazy fast stuff. I was never that good at it so it hasn't changed my approach in that it wasn't really a huge part of my approach to begin with. If I end up improving my double bass skill it will be purely for my own satisfaction and maybe to do some recording of metal ideas I have.
I don't think it's necessary to abandon it completely unless it really does nothing for you. Otherwise keep it around. You never know, it may come in handy or you just might have a change of heart. It's not like it's a huge piece of gear to store.