Why would you take the switch out? That should not make any difference to how long the bulb lasts. I have bought second of these lamps because I wanted longer cord than the original had. The second one has a dimmer switch, which is excellent for smaller heads; I can just turn it down when the head gets too hot and keep rooting, rather than having to take breaks. Unfortunately, those fittings with dimmers all seem to lack the disc needed to hold th lamp firm in the neck, so it needed bit of work, but now it is great.