Heh. It's cheaper for me to do that, and cooking is kinda fun. Making a cup of coffee costs 50 cents (the beans) plus 1 cup of water and the energy to heat it in an immersion kettle and takes 4 minutes. (I have a French press.) Driving to the coffee shop before work takes 10 minutes to get there and back to the highway, plus waiting on line, and it costs $1.50 for a travel mug (BYO.)

I'd rather sleep the extra half hour and make it myself.