Allow me to take a stab at this important question.
If you were to pie chart the energy consumption of an average American, you'd find that the largest wedge is burned in pursuit of convenient and inexpensive shopping, the second largest in pursuit of greatest quantity for the money in food, and the third in the pursuit of sex, ie, sick rides, those sexy, form fitting knee length black sweaters, soul patches, and, in more desperate cases, camel toe pants.
These three wedges comprise 97% of all energy spent by Americans, so the remaining wedges are negligible.
In all three, the avatar falls short. It is not shopping, unless you consider the occasional paid porn download shopping.
It does not pursue food because there it has all Doritos and Diet Pepsi it will ever need within a 3 foot radius. And finally, well, do I even need to address the pursuit of sex question?
Anyone who's ever witnessed a Brazilian on a Friday night will agree that the amount of energy they expend in the pursuit of sex far outweighs the categories I've outlined above.