I also find other sources less than inspiring. I very occasionally pick up a fashion mag when I'm checking out at Target (like, maybe twice a year -- I get enough "substantial" magazines at home like Harper's and Mother Jones that I feel guilty spending precious magazine reading time and money on fashion mags!). But mostly I enjoy flipping through them at my hair salon.
I also occasionally check out a few blogs, but I've been less and less inspired by them as time goes on and I feel more secure in my own style. When I first discovered YLF and style blogs in general, about four years ago (that long?!), I started bookmarking every style blog I found and copied all kinds of ideas. Well, I've moved on from a lot of those things I tried -- for me, many ended up being too busy, too twee, too something...
I have a hard time finding any fashion blogs now that really speak to me as far as outfit inspiration. It's really hard for me to embrace a gorgeous, size 2, 20-something woman as a style icon for me. It just ends up making me feel bad about myself because I have an unfortunate tendency to compare -- my brain immediately goes to, "Well, of course she looks fab in that! But translate that to my imperfect middle-aged body and it would be frump city!" I know that's my issue, but I'm better off avoiding the trigger. There are some good "older" not-so-modelesque bloggers, but I only infrequently find myself moved to inspiration by even them. I'm on Pinterest, but the problem there remains the same -- I mostly pin for interesting items that I would then mix in my own way, if I were to acquire them. Or for totally aspirational looks for my fantasy life.
So, yeah, this is a long-winded way of agreeing with you -- I don't find a heck of a lot of inspiration outside of YLF. Is it weird that more of my inspiration is coming from inside me these days?