After probing digital M as an alternative to my DSLR kit, and deciding I liked it, yeah, I think I've accumulated more lenses than I'll use on a regular basis. At least those I do use, are the pricy ones. Not because of that, but because I like them best from a performance perspective.
I feel over the last few years the slow rise of mirrorless has resulted in platform options that find new uses for legacy glass. And if there is a lesson from this, it's that what's seemingly an ill fit or unusable at the moment, might find new life in the near future with some yet unknown system. Therefore, I do feel reluctant to sell lenses simply because I'm not using them much at the moment. For most cameras, I am less sentimental.