Increasingly I post my thoughts to Facebook for the following very simple reason

Meaning that you're posting them more often there rather than here? or is the tradeoff against posting someplace else?

If the tradeoff is against LW this is surprising to me because I find the quality of comments and ease of navigation on LW to be much better than on FB, including on your FB posts, which I follow, and this is presumably after you've already deleted the worst comments.

Maybe the difference is that on LW I don't have to read all the replies to what you write and so can easily find the top comments, but you're reading all the replies in both cases so that LW's vote up feature isn't providing you the same advantage that it's providing your readers like myself.