What are the characteristics that are actually useful on a deserted island? Outdoorsy (ideally, skilled in bushcraft), ex-military, able-bodied. On the first two, the programmer wins. On the last one, it's probably a wash. For every obese slob in this field, there's a carpenter whose back is fucked and is dependent on opiates.

Carpentry offers limited applicable skills if they're stranded 1000 miles away from the nearest Home Depot.