I regularly start out from second gear in my four-cylinder, four-speed Healey (it originally had a three-speed transmission), since a lot of people have said first gear is very low - great for pulling tree stumps. I have found a good use for first gear here in So Cal, though - every once in a while I'll be out during rush hour going up a metered freeway on ramp - I put it in first and it slowly rolls forward at just the right speed, probably 2 mph, so I don't have to keep coming to a complete stop and use the clutch.
Also every once in a while, just for the practice, I'll start out from non-synchro first gear, and when I do, I very consciously think of what I am doing as I go into gear and release the clutch, because 1) you can't go very far until the rpms tell you it's time to shift into second gear, 2) you're going so slow, the maniac in the non-LBC behind you wants to roll right over you, and 3) if you don't release it carefully, the "rhythm" won't be right, resulting in a sloppy shift, i.e. lurching - very uncool!
Sharon
Four-speed BN1