Half and half is just milk and cream. Milk is kindy carby so putting only cream in your coffee would not only taste better but would lower your carb consumption.

Cream is wonderful. I use it for omelettes, curries, ganaches, and coffee. And that's just off the top of my head.

The one thing I would suggest regarding cream is to track down the pasteurized kind as opposed to the ultra pasteurized. Ultra pasteurized cream is a scourge. Ultra pasteurization involves higher temperatures resulting in a cooked flavor/darker color. Blecccch!