Re: Why do I need a gear on a battery drill ?
Dual speed drills is actually quite handy. For low torque needs it's nice to be able to run faster in the high speed. When the going gets tough, gearing down is great! Low speed not only helps with drilling holes, as Sten mentioned, it reduces stripping out the heads of screws and rounding off driver tips. If you were to buy a drill with only a low speed or only a high speed, you will be left wanting for a different drill.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!