2nd gear starts shouldn't put too much stress on the gears, unless you are looking for a fast launch. the first gear does just that, and from some articles that i read, in the higher perf cars, first gears are good for the really hard pull to get the car moving. most leisure street starts can be done on the second. (altho it does feel underpowered if yer anywehre near uphill..)
in the snow, the 2nd gear is used so you put less torque down to the slippery pavement. or so the logic goes, whether you use the first or the second to launch on the snow, as long as you dun start spinning the wheels, that's what's important.