It's a particularly irritating damned-if-you-do, damned-if-you-don't situation. Avoid using buttons on your site? Then, as another poster pointed out, you don't get nearly as many shares, and your page views go down. Use buttons on your site? They slow your page down and, yes, your page views go down.
My experience is that with tweaking and sane numbers of buttons, b) costs you less visitors than a), but it's still a pain in the posterior.
Personally, I don't care much about blog views. I write, you can read. If it helps you, great. I'm not out to make money with my blog and as such I couldn't care less about how many readers I have. I do, however, care a ton about how fast it loads and how competently it is built because that reflects entirely on me.
My experience is that with tweaking and sane numbers of buttons, b) costs you less visitors than a), but it's still a pain in the posterior.