I can never get enough blood out of my thumbs so I don't bother with them anymore.
lol
Me either, no thumbs for me, certain sides of other fingers are hard too so I avoid those ones.
I um only change mine when it stops giving me blood. LOL, I don't use alcohol either, have never once had an infection. I think its all personal preference, and how sensitive to pain you are. If you are fine and can tolerate it, change it when u feel it's time. But I personally think it's pointless to change a lancet EVERY time you test.
LOL I'm a finger licker too, well after I poked. Haha maybe I have some vampire in me.