I have been looking online for a new lamp. I finally decided on one from Dimond Lighting and then realized that the light is an integrated LED. I had no idea what that meant, and in investigating it, it seems to me that means that if and when the light bulb, source, whatever I should call it, goes out, the lamp goes on the junk pile. Why would I want to spend $250 for a disposable lamp? Am I missing something? Also, how bright is it? Is it dimmable, etc.?