I enjoy using my Rancilio Silvia to make espresso as much as I enjoy drinking espresso. I wish I could make a shot every couple of hours, but I can't tolerate more than 3 double-shots a day. And decaf seems to make me jittery without the good rush of caffeine so I rarely drink it.
I recently bought a bag of Red Espresso, which is rooibos tea ground for espresso makers. Rooibos has no caffeine, and has a strong toasty flavor. It's fun to make espresso-style and it even produces a crema-like substance. It's a wonderful before-bed treat. (This is an unsolicited endorsement. Boing Boing doesn't accept money for posts.)